[ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (9nT) IN MAGNETOMETER DATA 09 10 25 0831UT issued 0849 UT on 09 Oct 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

WEAK SUDDEN IMPULSE DETECTED (9nT) IN MAGNETOMETER DATA 09 10 25 0831UT
               Mean Magnetometer Parameters Pre/Post Impulse:
                                     Pre        Post       Pre/Post
Magnetometer Station          Unit   Impulse    Impulse    Change
Cocos_Island_(GA/BOM/ETH)      nT    256.0      261.9        5.9
Darwin_(GA)                    nT    158.3      165.6        7.3
Darwin                         nT     55.2       63.7        8.5
Townsville_(GA)                nT   -619.4     -609.7        9.6
Townsville                     nT   -860.5     -851.2        9.3
Townsville_(ICSWSE/BOM)        nT    260.9      270.2        9.3
Learmonth_(GA)                 nT    318.5      330.7       12.2
Learmonth_(SWS)                nT   -946.3     -934.2       12.1
Canberra_(GA)                  nT   -166.8     -156.3       10.5
Hobart                         nT   -413.5     -402.4       11.1

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