[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0118 UT on 27 Aug 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 25/77
ISSUED AT 0115UT/27 AUGUST 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

AR4197 and AR4199 have continued to consistently produce R1 level 
flares. Shortwave fadeouts are probable.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 27-29 AUGUST 2025
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
27 Aug:  R1-R2                     Probable
28 Aug:  R1-R2                     Probable
29 Aug:  R1-R2                     Probable

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