[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0104 UT on 04 Jun 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/52
ISSUED AT 0103UT/04 JUNE 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Active Region 4455 recently produced an R3 level flare. Further 
flaring is likely from this active region. Shortwave fadeouts 
are probable.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 04-06 JUNE 2026
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
04 Jun:  R2, chance R3        Probable
05 Jun:  R2, chance R3        Probable
06 Jun:  R2, chance R3        Probable

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