[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 2332 UT on 16 Jun 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 25/66
ISSUED AT 2332UT/16 JUNE 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A new complex sunspot region may have the potential for M- and 
X-class solar flares over the next few days. Solar activity may 
be R1 with a chance for R2-R3 events.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 17-19 JUNE 2025
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
17 Jun:  R1, chance R2-R3             Probable
18 Jun:  R1, chance R2-R3             Possible
19 Jun:  R1, chance R2-R3             Possible

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