[Ips-dhfpr] ASWFC Daily HF Prop Report - 15 November 25 issued 2330 UT on 15 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 NOVEMBER) 
Date   T index  Conditions    
15 Nov   136    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : 10MeV Proton/PCA Event Began at 0915UT 14/11, Ended at 1135UT 14/11

Monthly T index:
Month  T index
Oct      104
Nov      89
Dec      90


2. FORECAST (16 NOVEMBER - 18 NOVEMBER)
Date   T index  Conditions       MUFs                              
16 Nov   100    Fair             Near predicted monthly values
17 Nov   120    Normal           Near to 15% above predicted 
                                 monthly values    
18 Nov   120    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 111 was issued on 
14 November and is current for 14-16 Nov. Maximum usable frequencies 
(MUFs) in the Australian region were enhanced by 15% during local 
day hours and up to 25% during local night hours. Spread-F was 
observed during local night hours in Hobart, and Sporadic-E was 
observed at Canberra, Perth, Norfolk Island, Brisbane, Townsville 
and Niue during local evening hours. MUFs are expected to be 
near predicted monthly values on 16-Nov and near predicted monthly 
values to enhanced by 15% over 17-18 Nov. Shortwave fadeouts 
are possible.

----------------------------------------------------------
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