[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0311 UT on 19 Jan 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 26/11
ISSUED AT 0310UT/19 JANUARY 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

A Halo Coronal Mass Ejection from Active Region 4341 has been 
observed, and is expected to impact Earth at 19/2000UT +/- 10 
hours. Maximum Usable Frequencies are expected to become depressed 
over the following 48 hours.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 19-21 JANUARY 2026
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