[ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (19nT) IN MAGNETOMETER DATA 18 12 23 0402UT issued 0428 UT on 18 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

WEAK SUDDEN IMPULSE DETECTED (19nT) IN MAGNETOMETER DATA 18 12 23 0402UT
               Mean Magnetometer Parameters Pre/Post Impulse:
                                     Pre        Post       Pre/Post
Magnetometer Station          Unit   Impulse    Impulse    Change
Cocos_Island_(GA/BOM/ETH)      nT    185.1      198.0       12.9
Darwin_(GA)                    nT    171.9      186.4       14.6
Townsville_(GA)                nT   -576.1     -557.0       19.1
Townsville                     nT   -429.1     -409.9       19.2
Townsville_(ICSWSE/BOM)        nT   -143.6     -124.7       18.8
Learmonth_(GA)                 nT    279.7      299.3       19.6
Learmonth_(SWS)                nT    151.3      170.7       19.4
Canberra_(GA)                  nT   -142.6     -118.1       24.6
Hobart                         nT    781.7      808.9       27.2

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