[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 February 25 issued 2330 UT on 16 Feb 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 FEBRUARY) 
Date   T index  Conditions    
16 Feb    99    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

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


2. FORECAST (17 FEBRUARY - 19 FEBRUARY)
Date   T index  Conditions       MUFs                              
17 Feb   105    Normal           Near predicted monthly values
18 Feb   110    Normal           Near predicted monthly values    
19 Feb   110    Normal           Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 23 was issued on 16 
February and is current for 16-17 Feb. Maximum usable frequencies 
(MUFs) on UT day 16-Feb in the Australian region were near predicted 
monthly values to 20% depressed. Depressions were observed in 
southern Australian regions. Spread F was observed at Hobart 
during local night hours. MUFs are expected to be near predicted 
monthly values over 17-19 Feb. 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