[Ips-hf-warning] ASWFC HF SHORTWAVE FADEOUT WARNING issued 0705 UT on 21 Dec 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 24/147
ISSUED AT 0704UT/21 DECEMBER 2024
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Two new sunspot groups have recently rotated onto the solar disk, 
both are complex in appearance and one has produced several low 
level M-class flares.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 21-23 DECEMBER 2024
IF COMMS DIFFICULTIES EXPERIENCED TRY A HIGHER FREQUENCY BAND
_____________________________________________________________

SOLAR ACTIVITY FORECAST       HF COMMS FADEOUTS
21 Dec:  R0-R1, chance R2     Possible
22 Dec:  R0-R1, chance R2     Possible
23 Dec:  R0-R1, chance R2     Possible

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