[Ips-dhfpr] ASWFC Daily HF Prop Report - 28 October 26 issued 2329 UT on 28 Oct 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 OCTOBER 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 OCTOBER) 
Date   T index  Conditions    
28 Oct    34    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Sep      61
Oct      60
Nov      58


2. FORECAST (29 OCTOBER - 31 OCTOBER)
Date   T index  Conditions       MUFs                              
29 Oct    40    Normal           Near predicted monthly values
30 Oct    35    Normal-fair      Depressed 15%/near predicted 
                                 monthly values    
31 Oct    35    Normal           Depressed 15%/near predicted 
                                 monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the northern Australian 
region on UT day 28-Oct were mostly near monthly predicted values, 
with some enhancements observed during local night. MUFs in the 
southern Australian region were depressed by up to 20% throughout 
the 24-hour period. Spread F was observed at Canberra and Hobart, 
with Sporadic E recorded at Learmonth. MUFs are forecast to be 
near predicted monthly values on 29-Oct, with depressions forecast 
across 30-31 Oct due to expected geomagnetic activity.

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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