From aswfc at bom.gov.au  Thu Feb  5 02:19:28 2026
From: aswfc at bom.gov.au (Australian Space Weather Forecasting Centre)
Date: Wed, 04 Feb 2026 15:19:28 +0000
Subject: [ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (17nT) IN MAGNETOMETER
 DATA 04 02 26 1505UT issued 1519 UT on 04 Feb 2026 [SEC=OFFICIAL]
Message-ID: <69836380.DZfitStL6IcjtscB%aswfc@bom.gov.au>

WEAK SUDDEN IMPULSE DETECTED (17nT) IN MAGNETOMETER DATA 04 02 26 1505UT
               Mean Magnetometer Parameters Pre/Post Impulse:
                                     Pre        Post       Pre/Post
Magnetometer Station          Unit   Impulse    Impulse    Change
Cocos_Island_(GA/BOM/ETH)      nT    246.5      258.9       12.4
Darwin_(GA)                    nT    146.8      160.2       13.4
Darwin                         nT     36.8       53.1       16.3
Townsville_(GA)                nT   -635.2     -617.9       17.3
Townsville                     nT   -871.5     -854.4       17.1
Townsville_(ICSWSE/BOM)        nT    194.8      211.5       16.7
Learmonth_(GA)                 nT    321.6      343.4       21.8
Learmonth_(SWS)                nT   -968.2     -946.2       22.0
Canberra_(GA)                  nT   -172.3     -154.1       18.2
Hobart                         nT   -625.0     -608.2       16.8

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au


From aswfc at bom.gov.au  Tue Feb 24 00:58:25 2026
From: aswfc at bom.gov.au (Australian Space Weather Forecasting Centre)
Date: Mon, 23 Feb 2026 13:58:25 +0000
Subject: [ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (8nT) IN MAGNETOMETER
 DATA 23 02 26 1336UT issued 1358 UT on 23 Feb 2026 [SEC=OFFICIAL]
Message-ID: <699c5d01.uw606YF8jkRC3xoh%aswfc@bom.gov.au>

WEAK SUDDEN IMPULSE DETECTED (8nT) IN MAGNETOMETER DATA 23 02 26 1336UT
               Mean Magnetometer Parameters Pre/Post Impulse:
                                     Pre        Post       Pre/Post
Magnetometer Station          Unit   Impulse    Impulse    Change
Cocos_Island_(GA/BOM/ETH)      nT    223.4      228.1        4.7
Darwin_(GA)                    nT    126.3      133.9        7.6
Darwin                         nT     19.3       28.5        9.2
Townsville_(GA)                nT   -649.9     -641.7        8.2
Townsville                     nT   -878.4     -870.0        8.5
Townsville_(ICSWSE/BOM)        nT    -36.7      -28.4        8.3
Learmonth_(GA)                 nT    303.8      314.5       10.7
Learmonth_(SWS)                nT   -987.7     -977.1       10.6
Canberra_(GA)                  nT   -179.0     -170.4        8.6
Hobart                         nT   -696.4     -683.3       13.1

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au