[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0731 UT on 27 Apr 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/43
ISSUED AT 0731UT/27 APRIL 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Regions 4425 and 4420 both harbour beta-gamma-delta magnetic 
complexities. Shortwave fadeouts are probable.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 27-29 APRIL 2026
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
27 Apr:  R2, chance of R3         Probable
28 Apr:  R2, chance of R3         Probable
29 Apr:  R2, chance of R3         Probable

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