[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 2353 UT on 17 Feb 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 23/19
ISSUED AT 2353UT/17 FEBRUARY 2023
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A pair of CME impacts are expected on 18-Feb and late on 19-Feb/early 
20-Feb. The geomagnetic activity these impacts produce is expected 
to cause HF depressions of up to 15% over 19-21 Feb.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 19-21 FEBRUARY 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