[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0317 UT on 21 May 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 25/50
ISSUED AT 0316UT/21 MAY 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Multiple active regions recently rotated over the eastern limb, 
some of which have produced R1 level flares. Shortwave fadeouts 
are possible.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 21-23 MAY 2025
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
21 May:  R0-R1                    Possible
22 May:  R0-R1                    Possible
23 May:  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