[Ips-hf-warning] ASWFC HF COMMS WARNING issued 0214 UT on 20 Aug 2022 [SEC=OFFICIAL]

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SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 22/61
ISSUED AT 0207UT/20 AUGUST 2022
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

AUSTRALIAN REGIONAL FREQUENCIES OF IONOPSHERIC SUPPORT HAVE BECOME 
UNEXPECTEDLY MILDLY TO MODERATELY DEPRESSED AFTER 00UT ON 20 AUGUST. 

MODERATELY DEGRADED HF PROPAGATION CONDITIONS NOW EXPECTED FOR 20 AUGUST 2022 
PARTICULARLY FOR THE SOUTHERN AUSTRALIAN REGION. FREQUNCIES OF SUPPORT MAY
RECOVER AS THE DAY PROGRESSES.
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
_____________________________________________________________
20 Aug:   35         -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