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

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (11 JANUARY) 
Date   T index  Conditions    
11 Jan   126    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Generally near predicted monthly values.
      Some sites depressed 15% early in the UT day.
   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 (12 JANUARY - 14 JANUARY)
Date   T index  Conditions       MUFs                              
12 Jan   130    Normal           Near predicted monthly values
13 Jan   130    Normal           Near predicted monthly values    
14 Jan   130    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 6 was issued on 
10 January and is current for 10-12 Jan. Maximum usable frequencies 
(MUFs) on UT day 11-Jan in the Australian region were depressed 
15% to near predicted monthly values in southern Australia to 
30% enhanced in northern Australia. Spread F was observed at 
Hobart during local night hours. MUFs are expected to be near 
predicted monthly values over 12-14 Jan. Mildly degraded conditions 
may be experienced during local night hours for the southern 
Australian region on 14-Jan. Isolated 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