[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 October 26 issued 2330 UT on 16 Oct 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 OCTOBER 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 OCTOBER) 
Date   T index  Conditions    
16 Oct    54    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.3    1542UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 20% 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 (17 OCTOBER - 19 OCTOBER)
Date   T index  Conditions       MUFs                              
17 Oct    60    Normal           Near predicted monthly values
18 Oct    60    Normal           Near predicted monthly values    
19 Oct    60    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 88 was issued on 
15 October and is current for 15-17 Oct. Maximum Usable Frequencies 
(MUFs) in the Australian region were mostly near predicted values 
on UT day 16-Oct, with some depressions observed after local 
dawn in the southern Australian region. Additional depressions 
were observed early in the UT day at Perth and Learmonth. Strong 
sporadic E was observed at Canberra and Hobart during local night 
hours, with spread F also observed at Hobart. MUFs are forecast 
to be near predicted values over 17-19 Oct. 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