[Ips-dhfpr] ASWFC Daily HF Prop Report - 11 February 25 issued 2330 UT on 11 Feb 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/11 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 FEBRUARY) 
Date   T index  Conditions    
11 Feb   119    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.6    0535UT  possible   lower  E. Asia/Aust.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   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 (12 FEBRUARY - 14 FEBRUARY)
Date   T index  Conditions       MUFs                              
12 Feb   115    Normal           Near predicted monthly values
13 Feb   115    Normal           Near predicted monthly values    
14 Feb    95    Normal-fair      Depressed 15%/near predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 11-Feb in 
the southern Australian region were near predicted monthly values. 
MUFs were near predicted monthly values to 20% depressed in the 
northern Australian region. Spread F was observed at Hobart during 
local night hours. MUFs are expected to be near predicted monthly 
values over 12-13 Feb. MUFs are expected to be near predicted 
monthly values to 15% depressed on 14-Feb due to a mild increase 
in geomagnetic activity. 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