[Ips-dhfpr] ASWFC Daily HF Prop Report - 22 February 25 issued 2330 UT on 22 Feb 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 FEBRUARY) 
Date   T index  Conditions    
22 Feb   139    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jan      124
Feb      118
Mar      115


2. FORECAST (23 FEBRUARY - 25 FEBRUARY)
Date   T index  Conditions       MUFs                              
23 Feb   140    Normal           Near to 15% above predicted 
                                 monthly values
24 Feb   150    Normal           Near to 15% above predicted 
                                 monthly values    
25 Feb   150    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 24 was issued on 
22 February and is current for 22-24 Feb. Maximum usable frequencies 
(MUFs) on UT day 22-Feb in the Australian region were near predicted 
monthly values. Sporadic E was observed at Brisbane, Canberra, 
Townsville and Cocos Islands. MUFs are expected to be near predicted 
monthly values to 15% enhanced over 23-25 Feb. Minor shortwave 
fadeouts are possible.

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For an explanation of some of the terms in this report, go to
https://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

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