[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 2136 UT on 19 Aug 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/73
ISSUED AT 2135UT/19 AUGUST 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

An active region currently rotating over the eastern limb recently 
produced an R1 level flare. Solar flare activity is expected 
to be at R0-R1 levels over 20-22 Aug.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 20-22 AUGUST 2026
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
20 Aug:  R0-R1                    Possible
21 Aug:  R0-R1                    Possible
22 Aug:  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