[Ips-msgr] IPS Monthly Report - December 1
rwc
rwc at ips.gov.au
Thu Jan 3 11:06:28 EST 2002
SUBJ: IPS MONTHLY SUMMARY - DECEMBER 2001
ISSUED BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SOLAR-GEOPHYSICAL INDICES
SOLAR AUST AUST
Day 10 cm flux A-INDEX T INDEX
01-Dec 221 12 188
02-Dec 245 7 183
03-Dec 235 15 188
04-Dec 233 14 147
05-Dec 237 12 133
06-Dec 247 13 138
07-Dec 226 14 130
08-Dec 221 5 120
09-Dec 224 5 130
10-Dec 219 8 166
11-Dec 221 6 149
12-Dec 237 14 158
13-Dec 220 6 132
14-Dec 217 8 164
15-Dec 218 17 148
16-Dec 209 20 139
17-Dec 203 16 109
18-Dec 212 12 136
19-Dec 208 9 150
20-Dec 221 8 147
21-Dec 234 13 166
22-Dec 243 9 130
23-Dec 255 8 150
24-Dec 275 26 137
25-Dec 259 13 98
26-Dec 268 8 130
27-Dec 275 8 155
28-Dec 263 13 166
29-Dec 264 27 165
30-Dec 247 29 126
31-Dec 246 17 109
10 CM SUNSPOT SUNSPOT AUST AUST No of
FLUX NUMBER NUMBER A-INDEX T INDEX FLARES
Monthly Monthly Yearly Monthly Monthly >M1.0
Month Average Average Average Average Average
Dec 00 173.0 104.5 112.1 8.2 143.0 7
Jan 01 166.7 95.1 108.8 8.4 139.2 8
Feb 01 147.3 80.1 104.2 7.0 137.2 1
Mar 01 177.7 114.2 104.8 14.0 142.6 36
Apr 01 178.3 108.2 107.6 14.4 129.4 45
May 01 148.7 97.3 108.7 7.1 118.0 11
Jun 01 173.7 134.0 109.8 5.9 135.8 13
Jul 01 131.3 82.2 111.3p 6.5 113.6 2
Aug 01 163.2 106.8 112.4p 8.0 113.3 23
Sep 01 233.3 150.7 112.6p 9.3 146.8 48
Oct 01 208.2 125.6 111.5p 15.8 149.8 36
Nov 01 212.7 106.5 110.9p 16.1 156.1 47
Dec 01 235.6 131.8 109.0p 12.6 144.7 46
Monthly T indices
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1992 153 172 155 134 95 80 88 66 68 66 84 90
1993 74 77 79 63 63 64 62 50 37 40 34 43
1994 57 41 42 26 15 14 23 18 20 20 20 20
1995 24 33 23 13 3 11 13 10 13 9 13 7
1996 12 7 4 2 5 2 3 4 4 3 11 15
1997 14 11 10 8 11 5 9 17 32 27 28 38
1998 40 41 43 56 46 56 76 75 86 69 74 93
1999 94 81 89* 77 98 124 124 106 89 91 123* 113
2000 108* 120 158 154 133 133 147 140 124 130 137 140
2001 133 133 137 121 113 138* 108 109 138* 146* 135* 112^
2002 109^ 107^ 104^ 98^ 93^ 89^ 87^ 84^ 81^ 79^ 76^ 74^
2003 71^ 69^ 66^ 64^ 61^ 59^ 57^ 54^ 52^ 49^ 47^ 45^
2004 43^ 41^ 39^ 37^ 35^ 33^ 31^ 29^ 28^ 26^ 24^ 23^
2005 21^ 20^ 19^ 17^ 16^ 15^ 14^ 13^ 12^ 11^ 10^ 9^
2006 8^ 8^ 7^ 6^ 6^ 5^ 5^ 5^ 4^ 4^ 4^ 4^
2007 4^ 5^ 5^ 6^ 7^ 8^ 9^ 11^ 13^ 16^ 18^ 21^
2008 25^ 28^ 32^ 36^ 41^ 45^ 50^ 54^ 59^ 64^ 68^ 73^
* = New data. T index may have changed.
^ = IPS predicted T index.
===============================================================================
2. FLARES AND SHORT-WAVE FADEOUTS
DATE CLASS M CLASS X FLARE FADEOUT POSSIBLE ON
FLARES FLARES MAX DAYLIGHT HF CIRCUIT
01 Dec 01 M2.2/2N 0651UT
01 Dec 01 M1.2/SF 1445UT
01 Dec 01 M4.8 1555UT 1500-1628UT
01 Dec 01 M2.9/SF 1656UT
01 Dec 01 M1.5/1F 1731UT
01 Dec 01 M1.8/SF 1749UT
02 Dec 01 M1.3 1500UT
02 Dec 01 M2.0 2206UT
04 Dec 01 M1.3 0546UT
08 Dec 01 M3.4 0634UT 0602-0655UT
11 Dec 01 X2.8 /SF 0808UT 0758-0814UT
11 Dec 01 M1.3/2N 1451UT
12 Dec 01 M3.0/1N 1911UT 1900-1918UT
12 Dec 01 M5.6 2200UT 2141-2218UT
12 Dec 01 M4.8/1F 2322UT 2313-2328UT
13 Dec 01 M1.8/SF 0640UT
13 Dec 01 X6.2 /3B 1430UT 1420-1435UT 1420-1435UT
13 Dec 01 M1.4/1F 2307UT
14 Dec 01 M3.5 0913UT 0840-0953UT
14 Dec 01 M4.4/2N 1954UT 1941-2002UT
16 Dec 01 M1.5/2N 0124UT
16 Dec 01 M1.0/1F 0328UT
19 Dec 01 M1.3/SF 1706UT
23 Dec 01 M1.2/SF 2336UT
24 Dec 01 M1.7/1N 0032UT
24 Dec 01 M3.5 1400UT 1350-1410UT
24 Dec 01 M1.4/1F 2241UT
25 Dec 01 M1.2/1F 0708UT
26 Dec 01 M7.1/1B 0540UT 0432-0647UT
26 Dec 01 M1.8/1F 1226UT
26 Dec 01 M1.3/SF 1718UT
26 Dec 01 M1.2/SF 2115UT
27 Dec 01 M1.4/2N 0613UT
27 Dec 01 M1.0/SF 1133UT
27 Dec 01 M2.3/2N 1658UT
28 Dec 01 M4.7/SF 0351UT 0342-0356UT
28 Dec 01 M1.3/SF 1230UT
28 Dec 01 X3.4 2045UT 2002-2132UT 2002-2132UT
29 Dec 01 M2.1 0411UT
29 Dec 01 M1.1/1F 0545UT
29 Dec 01 M1.8 0916UT
29 Dec 01 M9.3/SF 0945UT 0938-1006UT
29 Dec 01 M1.4/SF 1157UT
29 Dec 01 M3.3 1647UT 1633-1702UT
29 Dec 01 M1.8 2127UT
29 Dec 01 M2.8/1F 2256UT
10 MeV Proton Events:
Began Ended
26 12 2001 0610UT 28 12 2001 0710UT
28 12 2001 0935UT 28 12 2001 1030UT
29 12 2001 0530UT 29 12 2001 2240UT
30 12 2001 0335UT 30 12 2001 1000UT
Began 30 12 2001 2125UT and remains in progress.
2.1 Comments on Solar Activity.
Solar activity was at predominately moderate to high levels this month.
A total of 46 flares was observed, 43 M class events and 3 X class events.
The largest flare for the month was an X6.2 observed at 1430UT on 13 Dec.
===============================================================================
3. GEOMAGNETIC DISTURBANCES (for Australian Region)
DATE COMMENTS
03 Dec 01: Active periods observed late in uT day.
15-17 Dec 01: Active conditions, with brief minor storm periods.
21 Dec 01: Active periods.
24 Dec 01: Active to Minor Storm periods.
29 Dec 01: Major Storm, following moderate sudden impulse (78nT) observed at
0539UT.
30 Dec 01: Unsettled to Minor Storm, following weak impulse (20nT) observed at
2008UT.
31 Dec 01: Active periods.
The most signifiantly disturbed days this month were observed on 24, 29 and 30
Dec, with respective local A indices of 26, 27 and 29. Activity on 24 Dec was
not expected.
===============================================================================
4. IONOSPHERIC DISTURBANCES (for Australian Region)
25 Dec 2001 Southern region MUFs depressed 15-20%
MUFS in the region were generally 15% enhanced this month. Depressed
southern region MUFs were observed on 25 Dec following unexpected
geomagnetic activity on 24 Dec.
===============================================================================
5. IPS WARNINGS AND ALERTS ISSUED
WARNINGS:
HF RADIO WARNING:
ISSUE DATE NO BEGIN END
11 Dec 01 80 12 Dec 01 14 Dec 01
14 Dec 01 81 15 Dec 01 16 Dec 01
14 Dec 01 82 15 Dec 01 17 Dec 01
24 Dec 01 83 25 Dec 01 25 Dec 01
26 Dec 01 84 27 Dec 01 29 Dec 01
27 Dec 01 85 28 Dec 01 28 Dec 01
28 Dec 01 86 29 Dec 01 29 Dec 01
29 Dec 01 87 30 Dec 01 01 Jan 02
GEOMAGNETIC WARNING:
ISSUE DATE NO BEGIN END
11 Dec 01 48 13 Dec 01 15 Dec 01
14 Dec 01 49 15 Dec 01 16 Dec 01
27 Dec 01 50 28 Dec 01 29 Dec 01
30 Dec 01 51 31 Dec 01 31 Dec 01
ALERTS:
01 Dec 01: Flare Alert
02 Dec 01: Flare Alert
04 Dec 01: Flare Alert
08 Dec 01: Flare Alert
11 Dec 01: Flare Alert
12 Dec 01: Flare Alert
13 Dec 01: Flare Alert
14 Dec 01: Flare Alert
16 Dec 01: Geomagnetic
17 Dec 01: Geomagnetic
24 Dec 01: Geomagnetic
24 Dec 01: Flare Alert
26 Dec 01: Flare Alert
27 Dec 01: Flare Alert
28 Dec 01: Flare Alert
29 Dec 01: Geomagnetic
29 Dec 01: Flare Alert
30 Dec 01: Geomagnetic
31 Dec 01: Geomagnetic
SWF ALERTS AND DURATION REPORTS
DATE SWF BEGIN-END (UT)
11 Dec 01: SWF Alert (0759-0839 UT)
12 Dec 01: SWF Alert (2314-2334 UT)
26 Dec 01: SWF Alert (0444-0929 UT)
28 Dec 01: SWF Alert (0344-0404 UT)
IPS Radio and Space Services | email: asfc at ips.gov.au
PO Box 1386 | WWW: http://www.ips.gov.au/asfc
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au/users/asfc/
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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