[Ips-hf-warning] ASWFC HF DEPRESSION WARNING issued 0123 UT on 23 Sep 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC PRELIMINARY HF RADIO COMMUNICATIONS WARNING 23/99
ISSUED AT 0123UT/23 SEPTEMBER 2023
BY THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE.

Mild depressions (10-15%) to maximum usable frequencies (MUFs) 
may be observed in high and middle latitudes during local night 
hours over 24-25 Sep due to anticipated geomagnetic activity. 
Mild degradations to HF radio communication conditions are possible 
during local night hours over 24-25 Sep.

DEGRADED HF PROPAGATION CONDITIONS EXPECTED
FROM 24-26 SEPTEMBER 2023
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