[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0346 UT on 29 Nov 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 23/122
ISSUED AT 0346UT/29 NOVEMBER 2023
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Several CME impacts are expected over 30-Nov and 01-Dec, with 
significant geomagnetic storming expected. Due to this, significant 
degradations to HF radio communication are expected over this 
period. Maximum usable frequencies (MUFs) are expected to become 
significantly depressed.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 30 NOVEMBER 2023 TO 01 DECEMBER 2023
IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
A MORE DETAILED HF WARNING WILL FOLLOW IF DEPRESSIONS EVENTUATE.
_____________________________________________________________

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