[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0804 UT on 20 May 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/50
ISSUED AT 0804UT/20 MAY 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

MUFs have become 15% depressed in the Australian region. Further 
depressions are expected for the remainder of UT day 20-May.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FOR 20 MAY 2026
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 May:   40          -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