[Ips-dhfpr] ASWFC Daily HF Prop Report - 31 October 26 issued 2332 UT on 31 Oct 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/31 OCTOBER 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (31 OCTOBER) 
Date   T index  Conditions    
31 Oct    56    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 30% after local dawn.
   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 (01 NOVEMBER - 03 NOVEMBER)
Date   T index  Conditions       MUFs                              
01 Nov    35    Normal-fair      Depressed 15%/near predicted 
                                 monthly values
02 Nov    35    Normal           Depressed 15%/near predicted 
                                 monthly values    
03 Nov    50    Normal           Near predicted monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the northern Australian 
region on UT day 31-Oct with depressions observed in the southern 
Australian region after local dawn due to geomagnetic activity. 
Spread F was observed at Hobart during local night hours and 
sporadic E was observed at Darwin during local evening. MUFs 
are forecast to be near predicted monthly values to 15% depressed 
over 01-02 Nov due to ongoing geomagnetic activity. MUFs are 
expected to be near predicted monthly values on 03-Nov.

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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