[ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (18nT) IN MAGNETOMETER DATA 15 12 23 1146UT issued 1201 UT on 15 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

WEAK SUDDEN IMPULSE DETECTED (18nT) IN MAGNETOMETER DATA 15 12 23 1146UT
               Mean Magnetometer Parameters Pre/Post Impulse:
                                     Pre        Post       Pre/Post
Magnetometer Station          Unit   Impulse    Impulse    Change
Cocos_Island_(GA/BOM/ETH)      nT    167.8      178.8       11.0
Darwin_(GA)                    nT    130.0      143.9       13.9
Townsville_(GA)                nT   -608.4     -589.7       18.7
Townsville                     nT   -459.4     -441.0       18.5
Townsville_(ICSWSE/BOM)        nT   -163.1     -145.1       18.0
Learmonth_(GA)                 nT    249.8      271.2       21.4
Learmonth_(SWS)                nT    117.4      139.1       21.7
Canberra_(GA)                  nT   -148.0     -127.3       20.7
Hobart                         nT    768.2      787.5       19.4

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