[Ips-dhfpr] ASWFC Daily HF Prop Report - 29 November 23 issued 2330 UT on 29 Nov 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/29 NOVEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (29 NOVEMBER) 
Date   T index  Conditions    
29 Nov   138    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% 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
Oct      130
Nov      100
Dec      98


2. FORECAST (30 NOVEMBER - 02 DECEMBER)
Date   T index  Conditions       MUFs                              
30 Nov   100    Normal-poor      Near predicted monthly values/depressed 
                                 20 to 30%
01 Dec    70    Poor-fair        About 25% below predicted monthly 
                                 values    
02 Dec    40    Poor-normal      About 30% below predicted monthly 
                                 values   

COMMENT: ASWFC SWF HF Communications Warning 121 was issued on 
28 November and is current for 28-30 Nov. ASWFC Preliminary HF 
Communications Warning 122 was issued on 29 November and is current 
for 30 Nov to 1 Dec. Maximum usable frequencies (MUFs) were near 
predicted monthly values to 25% enhanced in the Australian region 
on UT day 29-Nov. MUFs are expected to be initially near predicted 
monthly values to 20% enhanced then becoming depressed 20 to 
30% late in the UT day on 30-Nov. Further depressed ionospheric 
conditions are expected for the interval 01-02 Dec due to anticipated 
geomagnetic activity from recent CMEs.

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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