[ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (8nT) IN MAGNETOMETER DATA 23 02 26 1336UT issued 1358 UT on 23 Feb 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

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