[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 2221 UT on 06 Jun 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 26/53
ISSUED AT 2221UT/06 JUNE 2026
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Due to anticipated geomagnetic activity beginning mid 8-Jun UT 
day, HF radio propagation conditions are expected to become degraded. 
Maximum usable frequencies in the Australian region may become 
depressed by up to 20% from late 8-Jun into 9-Jun.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 08-10 JUNE 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