[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0651 UT on 29 Dec 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 25/125
ISSUED AT 0650UT/29 DECEMBER 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

G1-G2 geomagnetic storm activity is expected for 30-31 Dec. Depressed 
and degraded HF communication conditions may be experienced on 
31-Dec to 01-Jan for the southern Australian region if the geomagnetic 
activity eventuates.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 31 DECEMBER 2025 TO 01 JANUARY 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