[Ips-dhfpr] ASWFC Daily HF Prop Report - 23 January 25 issued 2330 UT on 23 Jan 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 JANUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 JANUARY) 
Date   T index  Conditions    
23 Jan   118    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   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
Dec      132
Jan      119
Feb      116


2. FORECAST (24 JANUARY - 26 JANUARY)
Date   T index  Conditions       MUFs                              
24 Jan   110    Normal-fair      Near predicted monthly values 
                                 to 10% depressed
25 Jan   100    Fair             Near predicted monthly values 
                                 to 15% depressed    
26 Jan   100    Normal           Near predicted monthly values 
                                 to 20% depressed   

COMMENT: ASWFC Preliminary HF Communications Warning 12 was issued 
on 23 January and is current for 24-26 Jan. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 23-Jan were near predicted 
monthly values. MUFs are expected to be near predicted monthly 
values to 10-20% depressed over 24-26 Jan, with depressions worsening 
throughout the period. 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