[ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (17nT) IN MAGNETOMETER DATA 04 02 26 1505UT issued 1519 UT on 04 Feb 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

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