[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 2341 UT on 25 Aug 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/77
ISSUED AT 2340UT/25 AUGUST 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Active Region 4513 recently produced a flare at the R2 level 
and continues to exhibit a complex magnetic configuration. Shortwave 
fadeouts are possible.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 25-27 AUGUST 2026
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
25 Aug:  R1, chance of R2          Possible
26 Aug:  R1, chance of R2          Possible
27 Aug:  R1, chance of R2          Possible

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