HF Communications Warning

(last updated 16 Sep 2024 13:10 UT)

SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 24/102 ISSUED AT 2332UT/14 SEPTEMBER 2024 BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE. Significant geomagnetic activity is expected on 16-Sep due to an anticipated impact from a halo CME first observed on 14-Sep. This is expected to degrade HF conditions over 16-17 Sep. DEGRADED HF PROPAGATION CONDITIONS EXPECTED FROM 16-17 SEPTEMBER 2024 IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND A MORE DETAILED HF WARNING WILL FOLLOW IF DEPRESSIONS EVENTUATE. _____________________________________________________________

Please note this icon refers to any current HF Depression Warning. For HF Fadeout Warnings, see here.