[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0806 UT on 06 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 25/102
ISSUED AT 0806UT/06 NOVEMBER 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Current ongoing coronal hole high speed wind stream effects combined 
with anticipated CME impacts on 07-Nov are expected to produce 
G3-G4 geomagnetic storming, which may lead to HF depressions 
in the Australian region with stronger depressions at higher 
latitudes.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 06-08 NOVEMBER 2025
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