[Ips-msgr] IPS Monthly Report - September 02
rwc
rwc at ips.gov.au
Wed Oct 2 10:59:31 EST 2002
SUBJ: IPS MONTHLY SUMMARY - SEPTEMBER 2002
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-Sep 181 9 125
02-Sep 174 9 122
03-Sep 171 7 130
04-Sep 171 24 148
05-Sep 175 9 137
06-Sep 178 10 141
07-Sep 183 29 136
08-Sep 192 14 105
09-Sep 206 6 149
10-Sep 221 19 146
11-Sep 216 18 114
12-Sep 212 11 124
13-Sep 206 7 140
14-Sep 207 7 138
15-Sep 188 7 152
16-Sep 183 6 152
17-Sep 194 10 157
18-Sep 177 14 134
19-Sep 165 15 129
20-Sep 164 4 136
21-Sep 159 6 139
22-Sep 160 6 133
23-Sep 154 2 136
24-Sep 158 3 131
25-Sep 153 2 144
26-Sep 150 5 152
27-Sep 152 4 138
28-Sep 149 6 149
29-Sep 138 4 152
30-Sep 140 22 142
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
Sep 01 233.3 150.7 114.1 9.3 146.8 48
Oct 01 208.2 125.6 114.0 15.8 149.8 36
Nov 01 212.7 106.5 115.6 16.1 156.1 47
Dec 01 235.6 131.8 114.7 12.6 144.7 46
Jan 02 226.8 113.9 113.5 10.9 155.7 21
Feb 02 205.2 108.0 114.7 11.1 154.4 19
Mar 02 179.5 98.1 113.3 10.4 165.1 15
Apr 02 189.5 120.4 109.8p 11.2 143.2 17
May 02 178.4 120.8 106.8p 8.4 133.0 16
Jun 02 148.8 88.5 103.3p 6.2 113.9 4
Jul 02 174.5 99.9 99.3p 8.8 108.6 35
Aug 02 184.0 116.4 96.1p 11.2 133.5 45
Sep 02 175.9 109.3 93.3p 9.8 137.7 12
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 70 74 93
1999 94 81 89 77 98 124 124 105 89* 92* 123 113
2000 108 120 157 152 133 133 148 139* 124 130 137 141
2001 129 127 133 123 110 131* 111 112 143 151 154 160
2002 167* 171* 166* 136* 127* 111* 102* 135 101^ 94^ 89^ 84^
2003 80^ 74^ 69^ 66^ 63^ 60^ 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
03 Sep 02 M1.0 0054UT
08 Sep 02 M1.5/SF 0143UT
09 Sep 02 M2.1/2N 1752UT
10 Sep 02 M2.9/1N 1456UT
11 Sep 02 M2.2/2B 0735UT
16 Sep 02 M1.3/SN 0310UT
20 Sep 02 M1.5/SF 0512UT
20 Sep 02 M1.8/SF 0928UT
27 Sep 02 M1.8/SF 1312UT
27 Sep 02 M1.4/SF 1942UT
29 Sep 02 M2.6/2N 0639UT
30 Sep 02 M2.1/1B 0150UT
2.1 Comments on Solar Activity.
Solar activity was mostly at low to moderate levels this month,
with 12 M class flares observed and no X class flares. The
largest flare for the month was an M2.9 on 10 Sep.
===============================================================================
3. GEOMAGNETIC DISTURBANCES (for Australian Region)
DATE COMMENTS
04 Sep 02: Active conditions observed in association with southward
interplanetary magnetic field.
07-08 Sep 02: Major storm conditions late in UT day on 07 Sep following sudden
impulse of 27nT at 1637UT. Activity declined during first half of
UT day 08 Sep.
10-12 Sep 02: Active to minor storm periods local night hours, associated
with solar coronal hole and southward interplanetary magnetic
field conditions.
30 Sep 02: Brief minor storm periods observed after weak sudden impulse
at 0817UT.
The strongest disturbance for the month was observed on 07 Sep. The
local A index reached 29 on this day.
===============================================================================
4. IONOSPHERIC DISTURBANCES (for Australian Region)
08 Sep 02: Depressed 15-30% local daylight hours southern Aus/NZ region only.
11-12 Sep 02: Depressed 15-20% local daylight hours southern Aus/NZ region only.
Mild to moderate depressions were observed at some southern region
Aus/NZ sites on the above days, following overnight geomagnetic activity.
===============================================================================
5. IPS WARNINGS AND ALERTS ISSUED
WARNINGS:
HF RADIO WARNING:
ISSUE DATE NO BEGIN END
06 Sep 02 43 07 Sep 02 08 Sep 02
08 Sep 02 44 08 Sep 02 08 Sep 02
10 Sep 02 45 10 Sep 02 12 Sep 02
11 Sep 02 46 11 Sep 02 11 Sep 02
11 Sep 02 47 12 Sep 02 12 Sep 02
GEOMAGNETIC WARNING:
ISSUE DATE NO BEGIN END
06 Sep 02 31 07 Sep 02 08 Sep 02
08 Sep 02 32 10 Sep 02 12 Sep 02
ALERTS:
04 Sep 02: Geomagnetic
07 Sep 02: Geomagnetic
07 Sep 02: Geomagnetic
08 Sep 02: Geomagnetic
08 Sep 02: Flare Alert
08 Sep 02: Geomagnetic
09 Sep 02: Flare Alert
10 Sep 02: Geomagnetic
10 Sep 02: Flare Alert
11 Sep 02: Flare Alert
11 Sep 02: Geomagnetic
27 Sep 02: Flare Alert
30 Sep 02: Flare Alert
30 Sep 02: Geomagnetic
SWF ALERTS AND DURATION REPORTS
DATE SWF BEGIN-END (UT)
None Issued.
IPS Radio and Space Services | email: asfc at ips.gov.au
PO Box 1386 | WWW: http://www.ips.gov.au
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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