[ips-si-alert] WEAK SUDDEN IMPULSE DETECTED (9nT) IN MAGNETOMETER DATA 18 12 23 1540UT issued 1558 UT on 18 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

WEAK SUDDEN IMPULSE DETECTED (9nT) IN MAGNETOMETER DATA 18 12 23 1540UT
               Mean Magnetometer Parameters Pre/Post Impulse:
                                     Pre        Post       Pre/Post
Magnetometer Station          Unit   Impulse    Impulse    Change
Cocos_Island_(GA/BOM/ETH)      nT    150.7      157.1        6.4
Darwin_(GA)                    nT    109.1      117.2        8.1
Townsville_(GA)                nT   -628.4     -618.6        9.8
Townsville                     nT   -480.9     -471.5        9.4
Townsville_(ICSWSE/BOM)        nT   -195.6     -186.0        9.6
Learmonth_(GA)                 nT    232.1      243.7       11.6
Learmonth_(SWS)                nT    104.1      115.7       11.7
Canberra_(GA)                  nT   -166.1     -155.7       10.4
Hobart                         nT    765.4      775.2        9.9

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