[ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (23nT) IN MAGNETOMETER DATA 18 12 23 0540UT issued 0601 UT on 18 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

WEAK SUDDEN IMPULSE DETECTED (23nT) IN MAGNETOMETER DATA 18 12 23 0540UT
               Mean Magnetometer Parameters Pre/Post Impulse:
                                     Pre        Post       Pre/Post
Magnetometer Station          Unit   Impulse    Impulse    Change
Cocos_Island_(GA/BOM/ETH)      nT    194.5      210.8       16.3
Darwin_(GA)                    nT    166.7      184.5       17.8
Townsville_(GA)                nT   -580.7     -557.9       22.8
Townsville                     nT   -431.9     -409.0       22.9
Townsville_(ICSWSE/BOM)        nT   -145.5     -122.9       22.6
Learmonth_(GA)                 nT    280.0      302.7       22.8
Learmonth_(SWS)                nT    150.5      173.2       22.7
Canberra_(GA)                  nT   -129.6     -101.2       28.4
Hobart                         nT    809.4      842.4       33.0

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