[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0725 UT on 09 Mar 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC HF RADIO COMMUNICATIONS WARNING 25/28
ISSUED AT 0725UT/09 MARCH 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Geomagnetic activity in response to coronal hole high speed wind 
stream effects has produced HF depressions in the Australian 
region. Further depressions are expected over 09-10 Mar.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 09-10 MARCH 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
_____________________________________________________________
09 Mar:  117   normal/-30%      2  4  6  6  8 12 16 16
10 Mar:  117   normal/-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