[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0031 UT on 23 Mar 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 25/30
ISSUED AT 0031UT/23 MARCH 2025
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A CME is expected to arrive during the second half of the UT 
day 23-Mar. If the forecast geomagnetic storm activity eventuates 
degraded HF conditions are expected for second half of the UT 
day 23-Mar with ionospheric maximum usable frequencies (MUFs) 
likely to become depressed on 24-Mar.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 23-24 MARCH 2025
IF COMMS DIFFICULTIES EXPERIENCED TRY A LOWER FREQUENCY BAND
A MORE DETAILED HF WARNING WILL FOLLOW IF DEPRESSIONS EVENTUATE.
_____________________________________________________________

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