[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 2151 UT on 17 Oct 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/89
ISSUED AT 2150UT/17 OCTOBER 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Two large, magnetically complex regions are currently present 
on the solar disk, with R1-level flare activity possible over 
the next 48 hours. Shortwave fadeouts are possible.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 18-19 OCTOBER 2026
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
18 Oct:  R0-R1                Possible
19 Oct:  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