[Ips-dhfpr] ASWFC Daily HF Prop Report - 14 November 25 issued 2342 UT on 14 Nov 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/14 NOVEMBER 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (14 NOVEMBER) 
Date   T index  Conditions    
14 Nov    91    Poor-normal    

Flares    Max     Fadeout    Freq.  Sectors
  M1.8    0739UT  possible   lower  Mid East/Indian
  X4.0    0830UT  probable   all    Mid East/Indian
  M1.3    2012UT  possible   lower  East Pacific/
                                    North American
  M1.3    2131UT  possible   lower  East Pacific/
                                    North American

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

PCA Event : 10MeV Proton/PCA Event Began at 0950UT 11/11, Ended at 1550UT 13/11
 and, 10MeV Proton/PCA Event Began at 0915UT 14/11, Ended at 1135UT 14/11
 and, 100MeV Proton/PCA Event Began at 1010UT 11/11, Ended at 0215UT 13/11

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


2. FORECAST (15 NOVEMBER - 17 NOVEMBER)
Date   T index  Conditions       MUFs                              
15 Nov   100    Normal           Near predicted monthly values
16 Nov    90    Fair             Near predicted monthly values    
17 Nov   100    Normal           Near 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 began the UT day 14-Nov depressed 
by 20% in the southern regions. Conditions improved to near predicted 
monthly values over the UT day. Spread-F was observed during 
local night hours in Hobart, and Sporadic-E was observed during 
local nigh hours at Norfolk Island, Niue, Brisbane and Townsville. 
MUFs are expected to be near predicted monthly values over 15-17 
Nov, with mild depressions possible on 16-Nov due to anticipated 
geomagnetic activity. Shortwave fadeouts are probable.

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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