[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 2032 UT on 21 Jun 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/55
ISSUED AT 2031UT/21 JUNE 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

New sunspot region AR 4473 has produced several M-class solar 
flares in the past few days, and is likely to produce more. Radio 
blackout conditions of R1-R2 levels are possible.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 21-23 JUNE 2026
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
21 Jun:  R1-R2                Possible
22 Jun:  R1-R2                Possible
23 Jun:  R1-R2                Possible

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