[Ips-geo-warning] ASWFC GEOMAGNETIC WARNING issued 0029 UT on 15 Dec 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC GEOMAGNETIC DISTURBANCE WARNING 25/100
ISSUED AT 0026UT/15 DECEMBER 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

The Earth is expected to enter a coronal hole wind stream on 
18-Dec, there may be an increase in geomagnetic activity from 
late in the UT day on 17-Dec.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED 
FROM 17-18 DECEMBER 2025
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GEOMAGNETIC ACTIVITY FORECAST
17 Dec:  Mostly G0, chance of G1 toward the end of the UT day
18 Dec:  G1, chance of an isolated G2 period early in the UT day.

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