[ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (9nT) IN MAGNETOMETER DATA 11 08 26 1128UT issued 1143 UT on 11 Aug 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

WEAK SUDDEN IMPULSE DETECTED (9nT) IN MAGNETOMETER DATA 11 08 26 1128UT
               Mean Magnetometer Parameters Pre/Post Impulse:
                                     Pre        Post       Pre/Post
Magnetometer Station          Unit   Impulse    Impulse    Change
Cocos_Island_(GA/BOM/ETH)      nT    277.7      284.3        6.6
Darwin_(GA)                    nT    163.3      171.3        8.0
Darwin                         nT     76.4       85.4        9.0
Townsville                     nT   -817.4     -807.7        9.6
Townsville_(ICSWSE/BOM)        nT    -40.6      -31.2        9.4
Learmonth_(GA)                 nT    348.6      359.6       10.9
Learmonth_(SWS)                nT   -955.4     -944.5       10.9
Canberra_(GA)                  nT   -176.5     -167.7        8.8
Hobart                         nT   -358.9     -350.3        8.6

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