[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 2317 UT on 11 Aug 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 26/72
ISSUED AT 2317UT/11 AUGUST 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Maximum Useable Frequencies (MUFs) in the Australian region have 
been 15% depressed on UT day 11-Aug. Further depressions are 
expected on UT day 12-Aug.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FOR 12 AUGUST 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
_____________________________________________________________
12 Aug:   35          -14%      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