[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 2256 UT on 01 Apr 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 26/31
ISSUED AT 2255UT/01 APRIL 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A CME has arrived weaker and later than expected inducing little 
geomagnetic activity. Australian MUFs are now expected near predicted 
monthly values to 15% enhanced for 02-Apr. A coronal hole wind 
stream is expected to increase geomagnetic activity on 03-Apr. 
Southern Australian MUFs may become mildly (15%) depressed on 
04-Apr.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FOR 04 APRIL 2026
IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
A MORE DETAILED HF WARNING WILL FOLLOW IF DEPRESSIONS EVENTUATE.
_____________________________________________________________

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