[Ips-geo-warning] ASWFC GEOMAGNETIC WARNING issued 2253 UT on 08 Oct 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC GEOMAGNETIC DISTURBANCE WARNING 25/78
ISSUED AT 2246UT/08 OCTOBER 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

On 11-Oct the geomagnetic field is expected to be initially at 
G0, increasing to G1 during the second half of the UT day due 
to the anticipated Earth entry into a coronal hole wind stream. 
G1, chance G2 conditions are possible on 12-Oct and G1 periods 
may be experienced on 13-Oct.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED 
DUE TO CORONAL HOLE HIGH SPEED WIND STREAM
FROM 11-13 OCTOBER 2025
_____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
11 Oct:  G0, reaching G1 during second half of the UT day.
12 Oct:  G1, chance G2
13 Oct:  Initially G1 then declining to G0

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