[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0718 UT on 05 Dec 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 25/116
ISSUED AT 0717UT/05 DECEMBER 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Due to several sunspots showing high magnetic complexity, isolated 
R1-R2 level radio blackouts are possible over 5-6 Dec.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 05-06 DECEMBER 2025
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
05 Dec:  R1-R2                Possible
06 Dec:  R1-R2                Possible

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