[Ips-geo-warning] ASWFC GEOMAGNETIC WARNING issued 2113 UT on 23 Jun 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC GEOMAGNETIC DISTURBANCE WARNING 25/47
ISSUED AT 2109UT/23 JUNE 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A large equatorial coronal hole is currently crossing the solar 
central meridian and 27 day geomagnetic recurrence patterns suggest 
G1 periods are likely from late 24-jun and on 25-Jun. 
The coronal hole appears larger on this rotation.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED 
DUE TO CORONAL HOLE HIGH SPEED WIND STREAM
FROM 24-26 JUNE 2025
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GEOMAGNETIC ACTIVITY FORECAST
24 Jun:  Initially G0, increasing to G1 later in the UT day
25 Jun:  G1, chance G2
26 Jun:  G0, chance G1 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