Geomagnetic Warning

(last updated 28 Dec 2025 13:40 UT)

SUBJ: ASWFC GEOMAGNETIC DISTURBANCE WARNING 25/102 ISSUED AT 2212UT/27 DECEMBER 2025 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. For 30-Dec planetary geomagnetic 27-day recurrence patterns show G3 conditions for the last two rotations due to southward IMF conditions preceding a coronal hole wind stream entry. However, the coronal hole on this rotation is smaller and less distinct possibly indicating that the southward IMF structure in the solar wind may also be weaker. Planetary G1, chance G2 conditions are forecast for 30-Dec and G0-G1 conditions are expected on 31-Dec. Geomagnetic activity in the Australian region is expected to be G0, chance G1 on 30-31 Dec. INCREASED GEOMAGNETIC ACTIVITY EXPECTED DUE TO CORONAL HOLE HIGH SPEED WIND STREAM FROM 30-31 DECEMBER 2025 _____________________________________________________________ GEOMAGNETIC ACTIVITY FORECAST 30 Dec: G1, chance G2 31 Dec: G0-G1

The Space Weather API provides the current geomagnetic warning status.