[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0738 UT on 27 Jul 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/69
ISSUED AT 0737UT/27 JULY 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Active Regions 4493 and 4494 have both previously produced M-class 
flares, with the potential for further flare activity. Shortwave 
fadeouts are possible.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 27-28 JULY 2026
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
27 Jul:  R0-R1                Possible
28 Jul:  R0-R1                Possible

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