[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0228 UT on 27 Jun 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/57
ISSUED AT 0227UT/27 JUNE 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Active Regions 4478 and 4475 both have the potential to produce 
M-class solar flares. Shortwave fadeouts are possible over the 
coming days.

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

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