[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0259 UT on 04 Jun 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 25/57
ISSUED AT 0258UT/04 JUNE 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Australian region MUFs are 15-20% depressed on UT day 04-Jun, 
particularly in southern Australian regions. Further depressions 
are possible on 05-Jun.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 04-05 JUNE 2025
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
_____________________________________________________________
04 Jun:   50          -20%      2  4  6  8  8 12 16 16
05 Jun:   50          -20%      2  4  6  8  8 12 16 16

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