[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0656 UT on 15 Mar 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 23/29
ISSUED AT 0654UT/15 MARCH 2023
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A CME has arrived at 15/0348UT. If geomagnetic activity eventuates 
overnight southern Australian region maximum usable frequencies 
(MUFs) may become depressed after local dawn on 16-Mar. Northern 
Australian region MUFs are expected to remain near to above normal.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FOR 16 MARCH 2023 FOR SOUTHERN AUSTRALIAN REGION ONLY.
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