Shocks from the PM
Low Density Events

An incomplete list of possible Interplanetary Shocks observed by the PM

(The zone designations are explained on the SHOCKSPOTTER description page.)

21 Dec 2014 (DOY 355 1822 UT) zone 4

12 Sep 2014 (DOY 255 1527 UT) zone 4,   ??Origin: 10 Sep 1721 UT, X1.6 x-ray flare in AR2158 with an impulsive flare at N14E05 and a Halo CME, travel time 46 hours

11 Sep 2014 (DOY 254 2302 UT) zone 2,   ????Origin: 08 Sep 2312 UT, M4.5 x-ray flare in AR2158 with an impulsive flare at N14E31 and a Halo CME, travel time 72 hours

19 Aug 2014 (DOY 231 0614 UT) zone 1

14 Jul 2014 (DOY 195 1327 UT) zone 2

06 Jul 2014 (DOY 187 0951 UT) possible small forward shock

02 Jul 2014 (DOY 183 2333 UT) zone 1

23 Jun 2014 (DOY 174 2200 UT) zone 4

07 Jun 2014 (DOY 158 1557 UT) zone 4

03 May 2014 (DOY 123 1650 UT) zone 3

25 Mar 2014 (DOY 084 1923 UT) zone 3

27 Feb 2014 (DOY 058 1617 UT) zone 4,   ??Origin: 25 Feb 0039 UT, X4.9 x-ray flare in AR1990 with a 2B optical flare at S12E82 and a Halo CME, travel time 63.5 hours

20 Feb 2014 (DOY 051 0258 UT) zone 4

19 Feb 2014 (DOY 050 0314 UT) zone 4

07 Feb 2014 (DOY 038 1628 UT) zone 3

09 Jan 2014 (DOY 009 1933 UT) zone 4,   ??Origin: 07 Jan 1804 UT, X1.2 x-ray flare in AR1944 with a 2N optical flare at S12W12 and a Halo CME, travel time 49.5 hours

07 Jan 2014 (DOY 007 1424 UT) zone 3,   ??Origin: 04 Jan 1847 UT, M4.0 x-ray flare with a type II CME, travel time 67.5 hours

13 Dec 2013 (DOY 347 1201 UT) zone 3

08 Dec 2013 (DOY 342 0726 UT) possible reverse shock

29 Oct 2013 (DOY 302 0926 UT) zone 4

8 Oct 2013 (DOY 281 1951 UT) zone 4

02 Oct 2013 (DOY 275 0125 UT) zone 4,   ??Origin: 29 Sep 2143 UT C1.2 x-ray flare and a Halo CME, travel time 52 hours

24 Aug 2013 (DOY 236 0003 UT) a possible small forward shock

22 Aug 2013 (DOY 234 1842 UT) zone 3

20 Aug 2013 (DOY 232 2143 UT) zone 3

18 Jul 2013 (DOY 199 1249 UT) small forward shock

09 Jul 2013 (DOY 190 1958 UT) zone 2

27 Jun 2013 (DOY 178 1345 UT) zone 4

23 Jun 2013 (DOY 174 0353 UT) zone 3,   ???Origin: 21 Jun 0230 UT M2.9 x-ray flare in AR1777 with a 1F optical flare at S16E73 and a CME, travel time 49 hours

02 Jun 2013 (DOY 153 0157 UT) a possible reverse shock

31 May 2013 (DOY 151 1532 UT) zone 3

25 May 2013 (DOY 145 0906 UT) zone 4

24 May 2013 (DOY 144 1740 UT) zone 4,   ???Origin: 22 May 1308 UT M5.0 x-ray flare in AR1745 with a 3N optical flare at N15W70 and an asymmetric halo CME, travel time 52 hours.

19 May 2013 (DOY 139 2213 UT) zone 4,   ??Origin: 17 May 0843 UT M3.2 x-ray flare in AR1748 with a 2B optical flare at N12E57 and an asymmetric halo CME, travel time 61.5 hours.

18 May 2013 (DOY 138 0023 UT) zone 0,   ???Origin: 15 May 0125 UT X1.2 x-ray flare in AR1748 with a 2N optical flare at N12E64 and an asymmetric halo CME, travel time 71 hours.

13 Apr 2013 (DOY 103 2224 UT) zone 4,   ??Origin: 11 Apr 0655 UT M6.5 x-ray flare in AR1719 with a 3B optical flare at N09E12 and a halo CME, travel time 63.5 hours.

17 Mar 2013 (DOY 076 0534 UT) zone 4

15 Mar 2013 (DOY 074 0446 UT) zone 3

16 Feb 2013 (DOY 047 1113 UT) zone 3

13 Feb 2013 (DOY 044 0037 UT)  possible small forward shock

26 Jan 2013 (DOY 026 2107 UT)  possible reverse shock

25 Jan 2013 (DOY 025 1604 UT)

19 Jan 2013 (DOY 019 1634 UT) zone 3

16 Dec 2012 (DOY 351 1651 UT) zone 1

26 Nov 2012 (DOY 331 0432 UT)  zone 2,   ???Origin: 23 Nov 1336 UT filament at S37E16 leading to a halo CME, travel time 63 hours

23 Nov 2012 (DOY 328 2122 UT)  zone 4,   ???Origin: 21 Nov 1510 UT M3.5 x-ray flare in AR1618 with a flare at N08E01 and a halo CME, travel time 54 hours.

12 Nov 2012 (DOY 317 2208 UT)  zone 4

31 Oct 2012 (DOY 305 1446 UT)  zone 4

08 Oct 2012 (DOY 282 0431 UT)  zone 30,   ???Origin: 05 Oct 0317 UT B7.8 x-ray flare in AR1584 with a partial halo CME, travel time 73 hours.

30 Sep 2012 (DOY 274 2221 UT)  zone 4,   ???Origin: 27 Sep 2336 UT C3.7 x-ray flare in AR1577 with a 1F optical flare at N06W34 and a halo CME, travel time 71 hours.

12 Sep 2012 (DOY 256 2017 UT)  a small forward shock

04 Sep 2012 (DOY 248 2212 UT)  zone 3

03 Sep 2012 (DOY 247 1133 UT)  zone 4

10 Aug 2012 (DOY 223 0432 UT)  a possible small forward shock

21 Jul 2012 (DOY 203 1525 UT)  small forward shock

20 Jul 2012 (DOY 202 0400 UT)  zone 3

14 Jul 2012 (DOY 196 1727 UT)  zone 4,   ???Origin: 12 Jul 1537 UT X1.4 x-ray flare in AR1520, travel time 50 hours.

16 Jun 2012 (DOY 168 1924 UT, 2029 UT)  zone 3 shock at 1924 followed by a zone 2 shock at 2029

16 Jun 2012 (DOY 168 0852 UT)  zone 3,   ???Origin: 14 Jun 1252 UT M1.9 x-ray flare in AR1504, travel time 44 hours.

21 May 2012 (DOY 142 1852 UT)  zone 3

20 May 2012 (DOY 141 0144 UT)  zone 1

03 May 2012 (DOY 124 0059 UT)

23 Apr 2012 (DOY 114 0230 UT)  zone 4,  

24 Mar 2012 (DOY 084 1114 UT)   possible reverse shock

15 Mar 2012 (DOY 075 1242 UT)  zone 4,   ??Origin: 13 Mar 1712 UT M7.9 x-ray flare in AR1429 at N17W61 and an asymmetric halo CME, travel time 43.5 hours.

12 Mar 2012 (DOY 072 0845 UT)  zone 4,   ??Origin: 10 Mar 1715 UT M8.4 x-ray flare in AR1429 N17W24 and a halo CME, travel time 35 hours.

11 Mar 2012 (DOY 071 1252 UT)   ??Origin: 09 Mar 0322 UT M6.3 x-ray flare in AR1429 at N17W03 and a halo CME, travel time 57.5 hours.

08 Mar 2012 (DOY 068 1053 UT)  zone 4,   ??Origin: 07 Mar 0002 UT X5.4 x-ray flare in AR1429 with a 3B optical flare at N17E27 and a halo CME, travel time 35 hours.

07 Mar 2012 (DOY 067 0347 UT)  zone 4,   ????Origin: 05 Mar 0230 UT X1.1 x-ray flare in AR1429 with a 2B optical flare at N17E52 and a halo CME, travel time 49 hours.

26 Feb 2012 (DOY 057 2107 UT)  zone 4,   ???Origin: 24 Feb 0346 UT halo CME at N25E28, travel time 65 hours.

22 Feb 2012 (DOY 053 0134 UT)

24 Jan 2012 (DOY 024 1433 UT)  ???Origin: 23 Jan 0338 UT M8.7 x-ray flare in AR1402 with a full halo CME, travel time 35 hours.

22 Jan 2012 (DOY 022 0518 UT)  zone 4,    ???Origin: 19 Jan 1344 UT M3.2 x-ray flare in AR1402 with an optical flare at N32E22 and a full halo CME, travel time 64 hours.

21 Jan 2012 (DOY 021 0349 UT)

02 Jan 2012 (DOY 002 0044 UT)

28 Nov 2011 (DOY 332 2127 UT)  zone 4,    ???Origin: 26 Nov 0700 UT halo CME, travel time 63 hours.

12 Nov 2011 (DOY 316 0510 UT)  zone 20,    ???Origin: 9 Nov 1304 UT M1.1 x-ray flare in AR1342 (N18E25) and a halo CME, travel time 64 hours.

30 Oct 2011 (DOY 303 0856 UT)

24 Oct 2011 (DOY 297 1750 UT)  zone 4

05 Oct 2011 (DOY 278 0655 UT)  zone 3

29 Sep 2011 (DOY 272 0027 UT)  zone 0

26 Sep 2011 (DOY 269 1202 UT)  zone 4,    ???Origin: 24 Sep 1233 UT M7.1 x-ray flare in AR1302 (~ N13E58) and a halo CME, travel time 47.5 hours.

25 Sep 2011 (DOY 268 1112 UT)  zone 4,    ????Origin: 22 Sep 1029 UT X1.4 x-ray flare in AR1302 with 2N optical flare at N13E78 and a halo CME, travel time 73 hours.

17 Sep 2011 (DOY 260 0305 UT)  zone 4,    ????Origin: 14 Sep 0000 UT partial halo CME, travel time 75 hours.

10 Sep 2011 (DOY 253 2208 UT)  zone 1,  reverse shock, possibly associated with the forward shock of 9 Sep.

09 Sep 2011 (DOY 252 1149 UT)  zone 3,    ????Origin: 07 Sep 2232 UT X1.8 x-ray flare in AR1283 with 3B optical flare at N14W28 and a partial halo CME; travel time 37 hours.

29 Aug 2011 (DOY 241 0046 UT)  zone 3

05 Aug 2011 (DOY 217 1832 UT)  zone 4,    ???Origin: 04 Aug 0340 UT M9.3 x-ray flare in AR1261 with 2B optical flare at N19W36 and a full halo CME; travel time 39 hours.

05 Aug 2011 (DOY 217 1723 UT)  zone 4,    ???Origin: 03 Aug 1317 UT M6.0 x-ray flare in AR1261 with 2B optical flare at N16W30 and a halo CME; travel time 52 hours.

04 Aug 2011 (DOY 216 2110 UT)  zone 4,    ???Origin: 02 Aug 0519 UT M1.4 x-ray flare in AR1261 with 1N optical flare at N14W15 and a halo CME; travel time 64 hours.

11 Jul 2011 (DOY 192 0805 UT)  zone 4

23 Jun 2011 (DOY 174 0218 UT)  zone 0,    ????Origin: 21 Jun 0122 UT C7.7 x-ray flare in AR1236 with an optical flare at N39W01 and a halo CME; travel time 49 hours.

17 Jun 2011 (DOY 168 0205 UT)  zone 4,    ??Origin: 14 Jun 0612 UT Partial halo CME; travel time 68 hours

10 Jun 2011 (DOY 161 0811 UT)  zone 3

05 Jun 2011 (DOY 156 0146 UT)  possible reverse shock

04 Jun 2011 (DOY 155 1944 UT)  zone 4

18 Apr 2011 (DOY 108 0606 UT)  zone 4,    ??Origin: 15 Apr 1702 UT M1.3 x-ray flare in AR1190 with an optical flare at N14W19; travel time 61 hours.

08 Apr 2011 (DOY 098 1821 UT)  zone 2,    Possible slow forward shock?

29 Mar 2011 (DOY 088 1513 UT)  zone 2

10 Mar 2011 (DOY 069 0545 UT)  zone 4,    ??Origin: 07 Mar 1943 UT M3.7 x-ray flare in AR1164 with an optical flare at N24W58 and a halo CME; travel time 58 hours.

18 Feb 2011 (DOY 049 0040 UT)  zone 4,    ?Origin: 15 Feb 0156 UT X2.2 x-ray flare in AR1158 with a halo CME; travel time 71 hours.

14 Feb 2011 (DOY 045 1502 UT)  zone 4,   

03 Aug 2010 (DOY 215 1651 UT)  zone 4,    ????Origin: 1 August full halo CME

11 Apr 2010 (DOY 101 1218 UT)  zone 3,    ???Origin: 8 April, 0230 UT B3.7 x-ray flare in AR 1060 with a full halo CME

05 Apr 2010 (DOY 095 0800 UT)  zone 4

02 Apr 2010 (DOY 092 0645 UT)  zone 3

15 Feb 2010 (DOY 046 1728 UT)  zone 3,    ?Origin: 12 Feb 1126 UT M8.3 x-ray flare in AR1046 with a 1N optical flare at N26E11 and a asymmetric halo CME; travel time 78 hours.

21 Oct 2009 (DOY 294 2325 UT)  zone 4

04 Oct 2009 (DOY 277 0315 UT)

03 Sep 2009 (DOY 246 1454 UT)  zone 4

24 Jun 2009 (DOY 175 0945 UT)

28 May 2009 (DOY 148 0421 UT)  zone 4

03 Mar 2009 (DOY 062 0453 UT)

14 Jan 2009 (DOY 014 0005 UT)  zone 3

24 Nov 2008 (DOY 329 2247 UT)  zone 4

24 Jun 2008 (DOY 176 1908 UT)

28 May 2008 (DOY 149 0132 UT)  zone 4

17 Dec 2007 (DOY 351 0202 UT)  zone 3

12 Nov 2007 (DOY 316 2137 UT)  zone 0

25 Oct 2007 (DOY 298 1056 UT)  zone 4,    possible CIR forward shock

27 Sep 2007 (DOY 270 1052 UT)  zone 2,    possible CIR forward shock

20 Sep 2007 (DOY 263 0926 UT)  zone 3, possible CIR forward shock

07 May 2007 (DOY 127 0749 UT)  zone 3,    CIR forward shock

16 Dec 2006 (DOY 350 1743 UT)  zone 0,    ??Origin: 14 Dec 2215 X1.5 x-ray flare in AR0930 with a potentially asymmetric full halo CME; travel time 43.5 hours

14 Dec 2006 (DOY 348 1357 UT)  zone 4,    ?Origin: 13 Dec 0240 X3.4 x-ray flare in AR0930 with a 4B optical flare at S06W24 and a halo CME; travel time 35.5 hours

08 Dec 2006 (DOY 342 0411 UT)  zone 3,    ??Origin: 06 Dec 1847 X6.5 x-ray flare in AR0930 with a 3B optical flare at S06E63; travel time 33.5 hours

01 Oct 2006 (DOY 274 0842 UT)  zone 1,   reverse shock

24 Sep 2006 (DOY 267 0603 UT)  zone 1,   reverse shock

19 Aug 2006 (DOY 231 1039 UT)  no zone

18 Aug 2006 (DOY 230 1542 UT)  zone 4,    ???Origin: 16 Aug 1617 C3.6 x-ray flare in AR0904 with a sub-optical flare at S14W13 and a halo CME; travel time 47.5 hours

15 Aug 2006 (DOY 227 1626 UT)  zone 2

09 Jul 2006 (DOY 190 2104 UT)  zone 4,    ??Origin: 06 Jul 0836 M2.5 x-ray flare in AR0898 with a 2F optical flare at S11W32 and a possible partial halo CME; travel time 84.5 hours

28 Apr 2006 (DOY 118 0020 UT)  zone 2

13 Apr 2006 (DOY 103 1142 UT) 

01 Jan 2006 (DOY 001 1335 UT)  zone 3

08 Oct 2005 (DOY 281 0632 UT) zone 1,   reverse shock

15 Sep 2005 (DOY 258 0825 UT)  ???Origin: 13 Sep 1927 X1.5 x-ray flare in AR0808 with a 2B optical flare at S09E10; travel time 37 hours

11 Sep 2005 (DOY 254 0049 UT)  zone 3,    ????Origin: 09 Sep 0959 X3.6 x-ray flare in AR0808 at S11E66, also visible in the main sensor rates; travel time 39 hours

09 Sep 2005 (DOY 252 1310 UT)  zone 4,    ??Origin: 07 Sep 1740 X17.0 x-ray flare in AR0808 at with a 3B optical flare at S06E89; travel time 43.5 hours

02 Sep 2005 (DOY 245 1332 UT)  zone 3,    ???Origin: 29 Aug 1000 backside halo CME at S15W150 (based on SOHO helioseismology information); travel time 99.5 hours

24 Aug 2005 (DOY 236 0534 UT)  zone 4,    ??Origin: 22 Aug 1711 M5.6 x-ray flare in AR0798 with a 1N optical flare at S13W65; travel time 36.5 hours

01 Aug 2005 (DOY 213 0609 UT)  zone 2,    ??Origin: 30 Jul 0635 X1.3 x-ray flare in AR0792 at with a 2B optical flare at N12E61; travel time 47.5 hours

27 Jul 2005 (DOY 208 1843 UT)  zone 2

17 Jul 2005 (DOY 198 0123 UT)   ??Origin: 14 Jul 1120 X1.2 LDE x-ray flare in AR0786 at N11W90 with an asymmetric full halo CME; travel time 62 hours

10 Jul 2005 (DOY 191 0256 UT)  zone 3,    ??Origin: 07 Jul 1629 M4.9 x-ray flare in AR0786 with a SN optical flare at N09E03 and an asymmetric full halo CME; travel time 58.5 hours

12 Jun 2005 (DOY 163 0659 UT)  zone 3

29 May 2005 (DOY 149 0915 UT)  zone 3,    ??Origin: 26 May 1420 B7.5 flare in AR 0767 at S09E14 (approx.) with a full halo CME; travel time 67 hours

28 May 2005 (DOY 148 0348 UT)  zone 2

15 May 2005 (DOY 135 0219 UT)  zone 4,    Origin: 13 May 1657 M8.0 flare in AR 0759 with a 2B optical flare at N12E12 and a full halo CME; travel time 33.5 hours.

01 May 2005 (DOY 121 0751 UT)  zone 1,   reverse shock

05 Apr 2005 (DOY 095 0245 UT) zone 1, CIR related reverse shock

25 Mar 2005 (DOY 084 1641 UT) zone 1, nice reverse shock

17 Feb 2005 (DOY 048 2159 UT) zone 2

21 Jan 2005 (DOY 021 1648 UT) zone 4,    ?Origin: 20 Jan 0701 X7.1 flare in AR0720 with a 2B optical flare at N12W58 and a CME; travel time 34 hours.

11 Dec 2004 (DOY 346 1303 UT) zone 0,    ??Origin: 08 Dec 1959 C2.5 flare in AR0709 with a sub optical flare at N05W03 and a full halo CME; travel time 65 hours.

05 Dec 2004 (DOY 340 0704 UT) zone 4,    ??Origin: 03 Dec 0006 M1.5 flare in AR0708 with a full halo CME; travel time 55 hours.

05 Dec 2004 (DOY 340 0416 UT) no zone,    a small forward shock

21 Nov 2004 (DOY 326 0100 UT) zone 1, nice reverse shock associated with a high speed stream. See this overview plot

09 Nov 2004 (DOY 314 1824 UT) zone 4,    ????Origin: 08 Nov 0329 C7.9 flare in AR0696 with a sub optical flare at N08W28 and a full halo CME; travel time 39 hours.

09 Nov 2004 (DOY 314 0905 UT) zone 3,    ????Origin: 07 Nov 1606 X2.0 flare in AR0696 with a full halo CME; travel time 41 hours.

07 Nov 2004 (DOY 312 1759 UT) zone 4,    ????Origin: 06 Nov 0034 M9.3 flare in AR0696 with a 2N optical flare at N10E08; travel time 41.5 hours.

07 Nov 2004 (DOY 312 1022 UT) zone 4,    ????Origin: 05 Nov 1130 M4.0 flare in AR0696 with a 1F optical flare at N08E15; travel time 47 hours.

07 Nov 2004 (DOY 312 0222 UT) zone 2,    ????Origin: 04 Nov 2229 M2.5 flare in AR0696; travel time 52 hours

13 Sep 2004 (DOY 257 1929 UT) zone 4,    ????Origin: 12 Sep 0056 M4.8 flare in AR0672 with a 2N optical flare at N03E49; travel time 42.5 hours.

29 Aug 2004 (DOY 242 0920 UT) zone 3

01 Aug 2004 (DOY 214 0202 UT) zone 20

30 Jul 2004 (DOY 212 2041 UT) zone 3

26 Jul 2004 (DOY 208 2228 UT) zone 4,    ????Origin: 25 Jul 1514 M1.1 flare in AR0652 with a 1F optical flare at N08W33 and a full halo CME; travel time 31 hours.

22 Jul 2004 (DOY 204 0945 UT) zone 4,    ????Origin: 20 Jul 1232 M8.6 flare in AR0652 with a 3B optical flare at N11E34; travel time 45 hours.

12 Apr 2004 (DOY 103 1735 UT) zone 4,    ????Origin: 11 Apr 0419 C9.6 flare in AR0588 with a 1F optical flare at S16W46 and a full halo CME; travel time 37.5 hours.

10 Apr 2004 (DOY 101 1925 UT) zone 4,    ????Origin: 08 Apr 1019 C7.4 flare in AR0588 with a sub optical flare at S15W11 and a full halo CME; travel time 57 hours.

09 Apr 2004 (DOY 100 0147 UT) zone 3,    ????Origin: 06 Apr 1328 M2.4 flare in AR0588 with a sub optical flare at S18E15; travel time 60.5 hours.

03 Apr 2004 (DOY 094 0849 UT) zone 3,    ???

22 Jan 2004 (DOY 022 0110 UT) zone 4,    ????Origin: 20 Jan 0743 M6.1 flare in AR0540 with a 2N optical flare at S16W12; travel time 41.5 hours.

06 Jan 2004 (DOY 006 1924 UT) zone 1

07 Dec 2003 (DOY 341 1401 UT) zone 3,    ????Origin: Disappearing Filament 5 Dec >0915 UT from AR0516, S15W14, travel time < 53 hours.

22 Nov 2003 (DOY 326 0959 UT) zone 0,    ???Origin: 20 Nov 0747 UT M9.6 flare in AR0501 with a 2B optical flare at N01W08 and a halo CME; travel time 50 hours.

20 Nov 2003 (DOY 324 0728 UT) zone 4,    ?Origin: 18 Nov 0752 UT M3.2 flare in AR0501 with a 2N optical flare at N00E18 and a full halo CME; travel time 47.5 hours.

15 Nov 2003 (DOY 319 0527 UT)     ?Origin: 13 Nov 0929 UT M1.4 flare in AR0501 at N01E90; travel time 44 hours; see SOHO/EIT difference image and Lasco movie

06 Nov 2003 (DOY 310 1856 UT) zone 2,    ?Origin: 04 Nov 1953 UT X17.4 flare in AR0486 with a 3B optical flare at S19W83 and a full halo CME; travel time 47 hours. This X28 flare may have been the largest X-ray event since observations began in 1976.

04 Nov 2003 (DOY 308 0553 UT) zone 4,    ??Origin: 02 Nov 1725 UT X8.3 flare in AR0486 with a 2B LDE flare at S14W56 and a full halo CME; travel time 36.5 hours

29/30 Oct 2003 (DOY 302/303) * CAUTION * Data from the MTOF main sensor indicate that the solar wind speed exceeded the maximum speed detectable by the Proton Monitor (~ 1100 km/s) from about 0600 until at least 2000 UT on 29 Oct. The PM data during this time is therefore spurious. A plot of the solar wind alpha particle speeds (from the ACE/SWICS sensor) during Oct 39/30 indicates speeds in excess of 1900 km/s.

26 Oct 2003 (DOY 299 1835 UT) zone 20,    ????Origin: 23 Oct 0835 UT X5.4 flare in AR0486 with a 1B optical flare at S21E88 and a full halo CME; travel time 82 hours

26 Oct 2003 (DOY 299 0749 UT) zone 3

24 Oct 2003 (DOY 297 1447 UT) zone 4,    ????Origin: 22 Oct 0956 UT M1.7 flare in AR0484 at S02E22; travel time 53 hours

17 Aug 2003 (DOY 229 1338 UT)

27 Jul 2003 (DOY 208 0442 UT) possible CIR-related reverse shock

17 Jul 2003 (DOY 198 0013 UT) zone 10, possible reverse shock

14 Jul 2003 (DOY 195 1042 UT) possible weak shock

20 Jun 2003 (DOY 171 0804 UT) zone 1,    ???Origin: 17 Jun 2255 UT M6.8 flare in AR0386 at S07E55 with a full halo CME; travel time 57 hours

18 Jun 2003 (DOY 169 0444 UT) zone 2,    ????Origin: 15 Jun 2356 UT X1.3 flare in AR0386 at S07E80 with a full halo CME; travel time 53 hours

30 May 2003 (DOY 150 1602 UT) zone 4,    ???Origin: 29 May 0105 UT X1.2/2B flare in AR0365 at S06W37; travel time 39 hours

29 May 2003 (DOY 149 1836 UT) zone 3,    ???Origin: 28 May 0027 UT X3.6 flare in AR0365; travel time 42 hours

29 May 2003 (DOY 149 1152 UT) zone 3,    ???Origin: 27 May 2307 UT X1.3/2B flare in AR0365 at S07W17; travel time 37 hours

09 May 2003 (DOY 129 0449 UT) zone 1,    also visible in the main sensor rates

24 Apr 2003 (DOY 114 1819 UT) zone 2,    ????Origin: 21 Apr 1307 UT M2.8/1N flare in AR0338 at N18E02; travel time 77 hours

08 Apr 2003 (DOY 098 0004 UT) zone 2,    ???Origin: 04 Apr 2019 UT M1.9/SF flare in AR0324 at N08W65; travel time 76 hours

11 Mar 2003 (DOY 070 1546 UT) zone 1

20 Mar 2003 (DOY 079 0421 UT)

03 Mar 2003 (DOY 062 0617 UT) zone 1

27 Feb 2003 (DOY 058 1323 UT)    possible reverse shock

14 Feb 2003 (DOY 045 1739 UT) zone 2,    ???Origin: 12 Feb 0151 UT C8.9/1F flare in AR0280 at S05W43; travel time 64 hours

27 Jan 2003 (DOY 027 1636 UT) zone 1, also visible in the main sensor rates

19 Jan 2003 (DOY 019 0336 UT) zone 2, also visible in the main sensor rates

24 Dec 2002 (DOY 358 1318 UT) zone 1,    ???Origin: 22 Dec 0252 UT M1.1/2F flare in AR 0223 at N23W42; travel time 58.5 hours

19 Dec 2002 (DOY 353 1908 UT) zone 1,    possible reverse shock

19 Dec 2002 (DOY 353 1332 UT) possible slow shock

26 Nov 2002 (DOY 330 2121 UT) zone 4,    ???Origin: 24 Nov 2029 UT C6.4/SF flare in AR 0198 at S17W37 with a possible full halo CME; travel time 49 hours

09 Nov 2002 (DOY 313 1756 UT)    ???Origin: 06 Nov 0532 UT C7.2/SF flare in AR 0180 at S13E13; travel time 84.5 hours

02 Oct 2002 (DOY 275 2208 UT)    ???Origin: 30 Sep 0422 UT C2.1/SF flare in AR 0134 at N11E10; travel time 66 hours

02 Oct 2002 (DOY 275 0950 UT) zone 1,    possible reverse shock

30 Sep 2002 (DOY 273 0713 UT) zone 1,    ???Origin: 27 Sep 1312 UT M1.8/SF flare in AR 0134 at N13E45; travel time 66 hours

17 Sep 2002 (DOY 260 2142 UT) zone 1,    ???Origin: 15 Sep 1738 UT M1.0/SF flare in AR 0105 at S05W29; travel time 53 hours

07 Sep 2002 (DOY 250 1554 UT) zone 4,    ???Origin: 05 Sep 1706 UT C5.2/SF flare/disappearing filament in AR0102 at N09W28 with a full halo CME; travel time 47 hours

26 Aug 2002 (DOY 238 1020 UT) zone 4,    ?Origin: 24 Aug 0112 UT X3.1/1F flare in AR0069 at S02W81 with a large CME; travel time 57 hours

18 Aug 2002 (DOY 230 1816 UT) zone 4,    ???Origin: 16 Aug 1232 UT M5.2/2N flare in AR0069 at S14E20 with a full halo CME; travel time 54 hours

01 Aug 2002 (DOY 213 2231 UT) zone 4

01 Aug 2002 (DOY 213 0445 UT) zone 3,    ??Origin: 29 Jul 0238 UT M4.8/1F flare in AR0044 at S21W12 with a partial halo CME; travel time 74 hours

29 Jul 2002 (DOY 210 1244 UT) zone 4,    ?Origin: 26 Jul 2112 UT M8.7/2N flare in AR0044 at S19E26 with a full halo CME; travel time 63.5 hours

25 Jul 2002 (DOY 206 1303 UT) zone 20,    ?Origin: 23 Jul 0035 UT X4.8/2B flare in AR 0039 at S13E72; travel time 60.5 hours

19 Jul 2002 (DOY 200 0936 UT) zone 4,    ?Origin: 17 Jul 0713 UT M8.5/1B flare in AR 0030 at N21W17; travel time 50.5 hours. A possible second shock, detected about 5 hours later, and a subsequent density rarefaction are shown in this overview plot.

17 Jul 2002 (DOY 198 1529 UT) zone 4,    ?Origin: 15 Jul 2008 UT X3.0/3B flare in AR 0030 at N19W01; travel time 43.5 hours

30 May 2002 (DOY 150 0125 UT) zone 2

23 May 2002 (DOY 143 1017 UT) zone 4,    ???Origin: 20 May 1527 UT X2.1/2N flare in AR 9961 at S21E65 with a partial halo CME; travel time 67 hours

20 May 2002 (DOY 140 0256 UT) zone 3,    ???Origin: 17 May 0754 UT M1.5 flare near AR 9957 at ~N07E90; travel time 67 hours

18 May 2002 (DOY 138 1929 UT) zone 4,    ??Origin: 16 May 0011 UT C4.5 fl are in AR 9948 at S22E14 with a halo CME; travel time 67 hours

11 May 2002 (DOY 131 0916 UT) zone 3

10 May 2002 (DOY 130 1029 UT) zone 4,    ??Origin: 7 May 0346 UT M1.4 flare in AR 9937 at S10E27 with a halo CME; travel time 78.5 hours

23 Apr 2002 (DOY 113 0408 UT) zone 4,    ??Origin: 21 Apr 0151 UT X1.5/1F flare in AR 9906 at S14W84 with a partial halo CME and a moderately large energetic particle event; travel time 50.5 hours

19 Apr 2002 (DOY 109 0758 UT) zone 4,    ??Origin: 17 Apr 0824 UT M2.6/2N flare in AR 9906 at S14W34 with a full halo CME; travel time 47.5 hours

17 Apr 2002 (DOY 107 1013 UT) zone 4,    ?Origin: 15 Apr 0355 UT M1.2 flare; in AR 9906 at S15W01; travel time 54 hours.

29 Mar 2002 (DOY 088 2127 UT) zone 3

25 Mar 2002 (DOY 084 0058 UT) zone 20,    ?Origin: 22 Mar 1114 UT M1.6 flare; travel time 62 hours. The time of the shock passage is better determined from one of the rates in the main MTOF sensor.

23 Mar 2002 (DOY 082 1047 UT) zone 4

22 Mar 2002 (DOY 081 0323 UT) zone 2

20 Mar 2002 (DOY 079 1305 UT) zone 3,    ?Origin: 18 Mar 0231 UT M1.0 flare in AR 9866 at S10W40; travel time 58.5 hours. The time of the shock passage is better determined from one of the rates in t he main MTOF sensor.

18 Mar 2002 (DOY 077 1233 UT) zone 4,    ?Origin: 15 Mar 2310 UT M2.2/1F flare in AR 9866 at S08W03; tra vel time 61.5 hours.

15 Mar 2002 (DOY 074 1801 UT) zone 2,    ?Origin: 12 Mar 2313 UT M1.5/SF flare in AR 9871 at S22E93; travel time 67 hours.

28 Feb 2002 (DOY 059 0349 UT) zone 3,    ?Origin: 24 Feb 1447 UT C4.4 flare in AR 9841 at S18W44; travel time 85 hours.

17 Feb 2002 (DOY 048 0156 UT) zone 3

31 Jan 2002 (DOY 031 2044 UT) zone 4

17 Jan 2002 (DOY 017 0551 UT) zone 1,    ?Origin: 14 Jan 0627 UT M4.4 flare in AR 9767 at S18W115; travel time 71.5 hours.

10 Jan 2002 (DOY 010 1552 UT) zone 0,    ???Origin??    The time of passage is better determined from one of the rates in the main MTOF sensor.

30 Dec 2001 (DOY 364 1938 UT) zone 4,    ??Origin: 28 Dec 2045 UT X3.4 flare in AR 9767 at S20E97 with partial halo CME; travel time 47 hours

29 Dec 2001 (DOY 363 0456 UT) zone 4,    ?Origin: 26 Dec 0540 UT partial halo CME with M7.1/1B flare in AR 9742 at N08W54; travel time 71 hours

24 Nov 2001 (DOY 328 0533 UT) zone 4,    ????Origin: 22 Nov 2330 UT full halo CME with M9.9 flare in AR 9704; travel time 30 hours

19 Nov 2001 (DOY 323 1734 UT) zone 4,    ??Origin: 17 Nov 0525 UT full halo CME with M2.8/1N flare in AR 9704 at S13E42; travel time 60 hours

15 Nov 2001 (DOY 319 1345 UT) zone 1

06 Nov 2001 (DOY 310 0120 UT)    ?Origin: 04 Nov 1620 UT CME and X1.0/3B flare in AR 9684 at N06W18; travel time 33 hours. Note this plot uses 5-min averages to overcome the large energetic particle background (the largest yet observed since SOHO's launch). The time of shock passage is much better determined from one of the rates in the main MTOF sensor.

31 Oct 2001 (DOY 304 1249 UT) zone 4,    ??Origin: 29 Oct 1113 UT M3.6/1F flare in AR9682 at N12E25; travel time 49.5 hours

28 Oct 2001 (DOY 301 0233 UT) zone 4,    ?Origin: 25 Oct 1502 UT halo CME and X1.3/2B flare in AR 9672 at S16W21; travel time 57.5 hours

25 Oct 2001 (DOY 298 0757 UT) zone 4,    ?Origin: 22 Oct 1759 UT halo CME and X1.2/2B flare in AR 9672 at S18E16; travel time 62 hours

21 Oct 2001 (DOY 294 1605 UT) zone 4,    ?Origin: 19 Oct 0105 UT halo CME and X1.6/2B flare in AR 9661 at N16W18; travel time 63 hours

11 Oct 2001 (DOY 284 1613 UT) zone 4,    ?Origin: Halo CME, 09 Oct 1130 UT, starting at AR9653, associated with an M1.4 flare at S23E17; travel time 53 hours

30 Sep 2001 (DOY 273 1841 UT) zone 4

29 Sep 2001 (DOY 272 0903 UT) zone 4

25 Sep 2001 (DOY 268 1951 UT) zone 4,    ?Origin: Halo CME, 24 September 0912 UT, starting at AR9632, associated with an X2.6 flare at S18E27 observed at 1038 UT; travel time 33 hours

14 Sep 2001 (DOY 257 0108 UT) zone 4

30 Aug 2001 (DOY 242 1326 UT) zone 2

27 Aug 2001 (DOY 239 1914 UT) zone 4,    ?Origin: Halo CME, 25 August 1650 UT, associated with an X5.3 flare at S17E34 observed at 1645; travel time 50.5 hours

17 Aug 2001 (DOY 229 1026 UT) zone 4,    ?Origin: C2.3, N26W10, Halo CME 14 August ???? UT; travel time 70 hours

12 Aug 2001 (DOY 224 1049 UT) zone 4,    ?Origin: Disappearing Filament, 9 August 0936 UT; travel time 73 hours

05 Aug 2001 (DOY 217 1201 UT)

03 Aug 2001 (DOY 215 0637 UT) zone 4

18 Jun 2001 (DOY 169 0153 UT) zone 4,    ?Origin: AR 9502, M6.3/1N, S26E41, 15 June 1013 UT; travel time 63.5 hours

27 May 2001 (DOY 147 1417 UT) zone 4,    ?Origin: AR 9468, M1/1N, N07E29, 24 May 1939 UT; travel time 66.5 hours, OR perhaps was generated by a halo CME observed by LASCO, 25 May ~0400 UT, travel time 58 hours

28 Apr 2001 (DOY 118 0428 UT) zone 4,    ?Origin: AR 9433, M7.8/2B, N17W31, 26 Apr 1312 UT ; travel time 39.5 hours

21 Apr 2001 (DOY 111 1457 UT) zone 2,    ??Origin: AR 9415, C2.2, S20W120?, 18 Apr 0214 UT; travel time 84.5 hours;
     accompanied by a Ground Level Event

17 Apr 2001 (DOY 107 2357 UT) zone 4,    ?Origin: AR 9415, X14.4/2B, S20W85, 15 Apr 1350 UT; travel time 58 hours;
     accompanied by a Ground Level Event

13 Apr 2001 (DOY 103 0705 UT) zone 3,    ?Origin: AR 9415, M2.3/1F, S22W27, 11 Apr 1326 UT; travel time 42 hours

11 Apr 2001 (DOY 101 1518 UT) zone 3,    ?Origin: AR 9415, X2.3/3B, S23W09, 10 Apr 0526 UT; travel time 34 hours;
    long-duration 3B flare near central meridian

11 Apr 2001 (DOY 101 1302 UT) zone 3,    ?Origin: AR 9415, M7.9/2B, S21W04, 9 Apr 1534 UT; travel time 45.5 hours;
    almost overtaken by the above event

08 Apr 2001 (DOY 098 1023 UT) zone 4,    ?Origin: AR 9415, X5.6/SF, S21E31, 6 Apr 1921 UT; travel time 39 hours

07 Apr 2001 (DOY 097 1645 UT) zone 3,    ?Origin: AR 9415, M5.1/2N, S24E50, 5 Apr 1725 UT; travel time 47.5 hours

04 Apr 2001 (DOY 094 1421 UT) zone 4,    ?Origin: AR 9393, X20, N19W75?, 2 Apr 2151 UT; travel time 40.5 hours

31 Mar 2001 (DOY 090 0014 UT) zone 4,    ?Origin: AR 9393, X1.7, N14W12?, 29 Mar 1015 UT; travel time 38 hours

27 Mar 2001 (DOY 086 1702 UT) zone 4

27 Mar 2001 (DOY 086 0104 UT) zone 4

22 Mar 2001 (DOY 081 1232 UT) zone 1

19 Mar 2001 (DOY 078 1012 UT) zone 3

05 Mar 2001 (DOY 064 2133 UT) zone 1 reverse shock

03 Mar 2001 (DOY 062 1052 UT) zone 1

20 Feb 2001 (DOY 051 0103 UT)    a possible small shock

31 Jan 2001 (DOY 031 0736 UT) zone 4

23 Jan 2001 (DOY 023 1015 UT) zone 4

18 Jan 2001 (DOY 018 0918 UT)

17 Jan 2001 (DOY 017 1545 UT) zone 3

13 Jan 2001 (DOY 013 0150 UT) zone 3

10 Jan 2001 (DOY 010 1528 UT) zone 2,    a forward shock preceding a high speed stream

21 Dec 2000 (DOY 356 1009 UT)

28 Nov 2000 (DOY 333 0447 UT) zone 2

26 Nov 2000 (DOY 331 1126 UT) zone 4

26 Nov 2000 (DOY 331 0715 UT) zone 0

10 Nov 2000 (DOY 315 0601 UT) zone 4

06 Nov 2000 (DOY 311 0907 UT) zone 3

04 Nov 2000 (DOY 309 0130 UT) zone 4

31 Oct 2000 (DOY 305 1623 UT) zone 4

28 Oct 2000 (DOY 302 0901 UT) zone 4

28 Oct 2000 (DOY 302 0532 UT) zone 1

12 Oct 2000 (DOY 286 2136 UT) zone 4

05 Oct 2000 (DOY 279 0236 UT) zone 4

02 Oct 2000 (DOY 276 2358 UT) zone 2

17 Sep 2000 (DOY 261 1712 UT)

15 Sep 2000 (DOY 259 0415 UT) zone 4

06 Sep 2000 (DOY 250 1618 UT) zone 4

14 Aug 2000 (DOY 227 2149 UT) zone 4

11 Aug 2000 (DOY 224 1819 UT) zone 4

28 Jul 2000 (DOY 210 0920 UT) zone 3

28 Jul 2000 (DOY 210 0554 UT) zone 4

26 Jul 2000 (DOY 208 1809 UT) zone 2

26 Jul 2000 (DOY 208 0302 UT) zone 1

19 Jul 2000 (DOY 201 1501 UT) zone 4

15 Jul 2000 (DOY 197 1417 UT) zone 4,    more data is available for this interesting time period

14 Jul 2000 (DOY 196 1507 UT) zone 3

13 Jul 2000 (DOY 195 0911 followed by a second shock at 0933 UT), both zone 4

10 Jul 2000 (DOY 192 0555 UT) zone 4

23 Jun 2000 (DOY 175 1233 UT) zone 3

08 Jun 2000 (DOY 160 0843 UT) zone 4

04 Jun 2000 (DOY 156 1418 UT) zone 4

06 Apr 2000 (DOY 097 1601 UT) zone 4

24 Feb 2000 (DOY 055 1405 UT) zone 1 reverse shock

20 Feb 2000 (DOY 051 2056 UT) zone 4

14 Feb 2000 (DOY 045 0707 UT) zone 0

11 Feb 2000 (DOY 042 2324 UT) zone 4

11 Feb 2000 (DOY 042 0222 UT) zone 3

05 Feb 2000 (DOY 036 1501 UT) zone 1

27 Jan 2000 (DOY 027 1414 UT) zone 2

22 Jan 2000 (DOY 022 0027 UT)

11 Jan 2000 (DOY 011 1351 UT) zone 1

12 Dec 1999 (DOY 346 1515 UT) zone 4

13 Nov 1999 (DOY 317 1205 UT) zone 3

05 Nov 1999 (DOY 309 1907 UT) zone 2

28 Oct 1999 (DOY 301 1117 UT) zone 2

21 Oct 1999 (DOY 294 0134 UT) zone 4

23 Sep 1999 (DOY 266 0849 UT) zone 1 reverse shock.

15 Sep 1999 (DOY 258 0724 UT) zone 0

12 Sep 1999 (DOY 255 0315 UT) zone 4

23 Aug 1999 (DOY 235 1138 UT)

15 Aug 1999 (DOY 227 0952 UT) zone 2

12 Aug 1999 (DOY 224 0323 UT) zone 1

04 Aug 1999 (DOY 216 0131 UT) zone 3

26 Jul 1999 (DOY 207 2347 UT)

12 Jul 1999 (DOY 193 0110 UT) zone 3

06 Jul 1999 (DOY 187 1423 UT) zone 3

02 Jul 1999 (DOY 183 0023 UT) zone 3

28 Jun 1999 (DOY 179 0228 UT)possible weak shock

26 Jun 1999 (DOY 177 1927 UT) zone 4

26 Jun 1999 (DOY 177 0236 UT) zone 1

08 Jun 1999 (DOY 159 0206 UT) possible slow shock

25 May 1999 (DOY 145 0941 UT)    A nice, clean zone 1 Reverse Shock observed shortly after the arrival of a corotating high speed stream.

A possible shock-pair: a coronal hole-associated high speed stream appears bracketed by a zone 4 forward (17 May 1999, 2354 UT) and zone 1 reverse shock (18 May 1999, 1911 UT). An overview plot shows the timing of the Forward and Reverse shocks relative to the Stream Interface region.

05 May 1999 (DOY 125 1446 UT) zone 4

16 Apr 1999 (DOY 106 1047 UT) zone 2

10 Mar 1999 (DOY 069 0046 UT) zone 2

28 Feb 1999 (DOY 059 2047 UT) zone 1

21 Feb 1999 (DOY 052 2153 UT) possible slow shock

08 Nov 1998 (DOY 312 0420 UT) zone 4

07 Nov 1998 (DOY 311 0735 UT) zone 3,  - this is the first shock observed by the PM since SOHO's recovery

13 Jun 1998 (DOY 164 1825 UT) zone 3

29 May 1998 (DOY 149 1458 UT) zone 3

15 May 1998 (DOY 135 1342 UT) zone 3

08 May 1998 (DOY 128 0923 UT)

04 May 1998 (DOY 124 0212 & 0237 UT) zone 2 & 3

03 May 1998 (DOY 123 1706 UT) zone 4

01 May 1998 (DOY 121 2115 UT) zone 4

23 Apr 1998 (DOY 113 1714 UT) zone 3

07 Apr 1998 (DOY 097 1659 UT) zone 3

25 Mar 1998 (DOY 084 1534 UT) zone 3

02 Mar 1998 (DOY 061 0802 UT) zone 0

20 Feb 1998 (DOY 051 0031 UT) possible slow shock

18 Feb 1998 (DOY 049 0802 UT) zone 1

11 Feb 1998 (DOY 042 1337 UT) zone 1

31 Jan 1998 (DOY 031 1557 UT) zone 3  - - an interesting structure.

28 Jan 1998 (DOY 028 1602 UT)   (possibly related to the Type II radio burst observed by WAVES on Jan 25 around 1519 UT).

24 Jan 1998 (DOY 024 0449 UT) zone 3

06 Jan 1998 (DOY 006 1319 UT) zone 4,   (possibly from the January 3rd CME/Prominence event)

30 Dec 1997 (DOY 364 0118 UT) zone 3

10 Dec 1997 (DOY 344 0424 UT) zone 4

22 Nov 1997 (DOY 326 0855 UT) zone 4

09 Nov 1997 (DOY 313 2151 UT)

06 Nov 1997 (DOY 310 2207 UT) zone 4,   The Space Environment Center has a plot showing a large flux of high energy protons and xrays on 4 Nov as well as a large KP index on 7 Nov.

24 Oct 1997 (DOY 297 1020 UT) zone 4,   (STOF also sees a signature during this time period.)

23 Oct 1997 (DOY 296 0702 UT) zone 2

01 Oct 1997 (DOY 274 0020 UT) zone 3,   (Also see the HSTOF data for the same time period. More STOF data is available at the STOF data site.)

03 Sep 1997 (DOY 246 0812 UT) zone 1

02 Sep 1997 (DOY 245 2203 UT) zone 1

25 May 1997 (DOY 145 1324 UT) zone 0

20 May 1997 (DOY 140 0447 UT) zone 4

15 May 1997 (DOY 135 0055 UT), zone 30,   (our IMP sensor detected energetic particles from a flare on 12 May, and at the shock passage on 15 May.)

10 Apr 1997 (DOY 100 1258 UT) zone 2,    (note the solar wind flow direction in the plane perpendicular to the ecliptic (bottom panel) turns positive after the shock, indicating flow from the south. Energetic particles were detected from a flare on 7 April.)

09 Feb 1997 (DOY 040 1243 UT) zone 3

10 Jan 1997 (DOY 010 0022 UT) zone 2

17 Nov 1996 (DOY 322 2026 UT) zone 1,    a possible slow shock

02 Oct 1996 (DOY 276 1145 UT) zone 2,    a possible slow shock

26 Sep 1996 (DOY 270 2114 UT) zone 1 reverse shock

08 Apr 1996 (DOY 099 1233 UT)

06 Feb 1996 (DOY 037 1902 UT)


An (incomplete) table summarizing Interplanetary, Geomagnetic, and Galactic Cosmic Ray conditions near the times of the above shock passages is being developed. Shock travel times were derived using launch times estimated from available CME observations (from SoHO EIT and LASCO), solar flare x-ray and particle data, and Type II radio bursts. Comments are welcome.


figs.html last modified on 12/22/14 at 00:22 by sel