[Ips-geo-warning] ASWFC GEOMAGNETIC WARNING issued 0718 UT on 04 Jun 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC GEOMAGNETIC DISTURBANCE WARNING 26/35
ISSUED AT 0716UT/04 JUNE 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Three coronal mass ejections (CMEs) has been observed associated 
with two M-class and one X-class flares from region 4455. Modelling 
indicates the first CME is geoeffective, with an estimated arrival 
at Earth on 04-Jun at 14:00UT +/- 10 hours and the second and 
third CMEs with an estimated arrival at Earth on 05-Jun at 10:00UT 
+/- 10 hrs. G2 planetary geomagnetic conditions are expected, 
with a chance of G3.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED 
DUE TO CORONAL MASS EJECTION
FROM 04-06 JUNE 2026
_____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
04 Jun:  G2, chance G3
05 Jun:  G2, chance G3
06 Jun:  G0-G1

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