[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0158 UT on 20 Jun 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/54
ISSUED AT 0157UT/20 JUNE 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A new sunspot region that is currently rotating into view has 
produced an M1 level solar flare (R1). This region is not yet 
fully in view and so assessment is limited, however further R1 
events are possible in the coming days.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 20-21 JUNE 2026
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

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