[Ips-geo-warning] ASWFC GEOMAGNETIC WARNING issued 0117 UT on 21 Dec 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC GEOMAGNETIC DISTURBANCE WARNING 25/101
ISSUED AT 0115UT/21 DECEMBER 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

The Earth is expected to enter a coronal hole wind stream by 
22-Dec. There may be an increase in geomagnetic activity from 
late in the UT day on 21-Dec.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED 
DUE TO CORONAL HOLE HIGH SPEED WIND STREAM
FROM 21-23 DECEMBER 2025
_____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
21 Dec:  G0, chance G1
22 Dec:  G0-G1
23 Dec:  G0-G1

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