[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0121 UT on 04 Mar 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 23/25
ISSUED AT 0118UT/04 MARCH 2023
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Southern Australian region Maximum Usable Frequencies (MUFs) have 
unexpectedly remained depressed after local dawn, with ionospheric 
frequencies of support currently depressed 15-20% in this region.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FOR 04 MARCH 2023 FOR SOUTHERN AUSTRALIAN REGION ONLY.
IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
_____________________________________________________________

HF COMMUNICATIONS FORECAST (SOUTHERN AUSTRALIAN/NEW ZEALAND REGION)
                                   FREQUENCY BANDS
       T-index      MUFs        2  4  6  8 12 16 22 26
_____________________________________________________________
04 Mar:   45        -15%        2  4  6  8 12 12 16 22

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