[Ips-dhfpr] ASWFC Daily HF Prop Report - 19 October 26 issued 2330 UT on 19 Oct 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 OCTOBER 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 OCTOBER) 
Date   T index  Conditions    
19 Oct    47    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.6    0903UT  possible   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values 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 (20 OCTOBER - 22 OCTOBER)
Date   T index  Conditions       MUFs                              
20 Oct    45    Normal-fair      Near predicted monthly values
21 Oct    50    Normal           Near predicted monthly values    
22 Oct    50    Normal           Near predicted monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region were near predicted monthly values during local night 
and 15-20% depressed during local day on UT day 19-Oct. Spread 
F was observed at Hobart during local night hours. MUFs are forecast 
to be near predicted monthly values over 20-22 Oct, with some 
mild depressions possible on 20-Oct due to forecast geomagnetic 
activity. Shortwave fadeouts are possible.

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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