[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0123 UT on 24 Apr 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 23/39
ISSUED AT 0119UT/24 APRIL 2023
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A CME has impacted Earth's magnetosphere at 23/1700UT causing 
increased geomagnetic activity. HF depressions are currently 
being observed, especially in southern Australian regions. Depressions 
can be expected to continue over 24-Apr.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FOR 24 APRIL 2023
IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
_____________________________________________________________

HF COMMUNICATIONS FORECAST (AUSTRALIAN/NEW ZEALAND REGION)
                                   FREQUENCY BANDS
       T-index      MUFs        2  4  6  8 12 16 22 26
_____________________________________________________________
24 Apr:   6    depressed 15%    2  4  6  8 12 16 22 26

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