HF Fadeout Warning

(last updated 21 Dec 2024 12:15 UT)

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