[Ips-dhfpr] ASWFC Daily HF Prop Report - 13 January 26 issued 2330 UT on 13 Jan 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/13 JANUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (13 JANUARY) 
Date   T index  Conditions    
13 Jan    50    Fair-poor      

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 25% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 30% during local day.
      Depressed by 20% during local night.
   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      110
Jan      89
Feb      88


2. FORECAST (14 JANUARY - 16 JANUARY)
Date   T index  Conditions       MUFs                              
14 Jan    75    Fair-normal      Depressed 10-15%/near predicted 
                                 monthly values
15 Jan    80    Normal-fair      Near predicted monthly values    
16 Jan    89    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 7 was issued on 
11 January and is current for 12-14 Jan. ASWFC HF Communications 
Warning 8 was issued on 13 January and is current for 13-14 Jan. 
Maximum usable Frequencies (MUFs) in the Australian region were 
depressed during 13-Jan, with 20-30% depressions observed in 
the Northern Australian region as well as the Cocos Islands. 
MUFs in the Southern Australian region and the Antarctic were 
near predicted monthly values, but experienced strong sporadic-E 
and mild spread-F conditions. MUFs are expected to recover over 
14-Jan, with depressions of 10-15% forecast due to the ongoing 
coronal hole high-speed wind stream effects. MUFs are forecast 
to continue to recover to near predicted monthly values over 
15-16 Jan. Sporadic-E is possible during local night hours.

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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