[Ips-dhfpr] ASWFC Daily HF Prop Report - 12 January 26 issued 2330 UT on 12 Jan 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 JANUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (12 JANUARY) 
Date   T index  Conditions    
12 Jan    44    Poor           

Flares    Max     Fadeout    Freq.  Sectors
  M3.3 11/2314UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Depressed by 50% during local day.
      Depressed by 45% during local night.
      Depressed by 45% after local dawn.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
      Depressed by 35% after local dawn.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 30% during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Dec      110
Jan      89
Feb      88


2. FORECAST (13 JANUARY - 15 JANUARY)
Date   T index  Conditions       MUFs                              
13 Jan    50    Fair-poor        Depressed 20-30%/near predicted 
                                 monthly values
14 Jan    75    Fair             Depressed 10-15%/near predicted 
                                 monthly values    
15 Jan    80    Fair-normal      Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 7 was issued on 
11 January and is current for 12-14 Jan. Maximum usable Frequencies 
(MUFs) in the Australian region were depressed by 20-35% across 
the Australian and Antarctic regions, with depressions up to 
50% observed in the Cocos Island region. Strong sporadic-E, as 
well as spread-F were observed in the Southern Australian Region 
during local night hours. MUFs are forecast to be 20-30% below 
predicted monthly values over 13-Jan due to ongoing geomagnetic 
activity, before improving to 10-15% depressed on 14-Jan and 
trending toward predicted monthly values by 15-Jan. Shortwave 
fadeouts are possible, and sporadic-E may be observed 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