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

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 FEBRUARY) 
Date   T index  Conditions    
25 Feb   116    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.9 24/2302UT  possible   lower  West Pacific
  M1.3    0247UT  possible   lower  E. Asia/Aust.
  M3.6    1159UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 25% 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 : 10MeV Proton/PCA Event Began at 0010UT 25/02, Ended at 0830UT 25/02

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


2. FORECAST (26 FEBRUARY - 28 FEBRUARY)
Date   T index  Conditions       MUFs                              
26 Feb   120    Normal           Near predicted monthly values
27 Feb   120    Normal           Near predicted monthly values    
28 Feb   120    Normal-fair      Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 25 was issued on 
25 February and is current for 25-27 Feb. Maximum usable frequencies 
(MUFs) on UT day 25-Feb in the Australian region were near predicted 
monthly values. Mild spread F was observed at Hobart. MUFs are 
expected to be near predicted monthly values over 26-28 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