[Ips-dhfpr] ASWFC Daily HF Prop Report - 30 October 26 issued 2330 UT on 30 Oct 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/30 OCTOBER 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (30 OCTOBER) 
Date   T index  Conditions    
30 Oct    43    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 25% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   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
Sep      61
Oct      60
Nov      58


2. FORECAST (31 OCTOBER - 02 NOVEMBER)
Date   T index  Conditions       MUFs                              
31 Oct    35    Normal           Depressed 15%/near predicted 
                                 monthly values
01 Nov    35    Normal           Depressed 15%/near predicted 
                                 monthly values    
02 Nov    40    Normal           Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 99 was issued on 29 
October and is current for 29-31 Oct. Maximum Usable Frequencies 
(MUFs) in the northern Australian region on UT day 30-Oct were 
mostly near predicted monthly values, with some small periods 
of mild depressions across the region. Spread F was observed 
at Hobart during local night hours. MUFs are forecast to be near 
predicted monthly values to 15% depressed over 31-Oct to 01-Nov 
due to expected geomagnetic activity. MUFs are expected to be 
near predicted monthly values on 02-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