[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 2338 UT on 10 Aug 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 25/75
ISSUED AT 2338UT/10 AUGUST 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

AR4168 continues to produce R1 level flares but will rotate off 
the solar disk on 12-Aug.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 11-12 AUGUST 2025
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
11 Aug:  R1, chance of R2     Possible
12 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