[Ips-geo-warning] ASWFC GEOMAGNETIC WARNING issued 0404 UT on 19 Mar 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC GEOMAGNETIC DISTURBANCE WARNING 26/17
ISSUED AT 0353UT/19 MARCH 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Update of Geomagnetic Warning 16/16. Two CME arrivals are now 
expected. The first CME is associated with the M2.7 flare on 
16-Mar which is expected to arrive at 19/1800UT +/ 12 hours. 
The second CME is associated with another M2.7 flare on 18-Mar 
and is expected to arrive at 20/1700UT +/- 12 hours. The second 
CME has a westward bias and model output shows a potentially 
less direct impact than the first CME. Both these flare/CME events 
originated from solar region AR4392. In addition, solar wind 
27 day recurrent patterns suggest coronal hole wind streams are 
likely to increase the solar wind speed over 21-23 Mar.

INCREASED GEOMAGNETIC ACTIVITY EXPECTED 
FROM 19-23 MARCH 2026
_____________________________________________________________

GEOMAGNETIC ACTIVITY FORECAST
19 Mar:  Initially G0, then G1-G2
20 Mar:  G1-G2
21 Mar:  G1-G2
22 Mar:  G0-G1

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