[Ips-dhfpr] ASWFC Daily HF Prop Report - 04 November 23 issued 2331 UT on 04 Nov 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 NOVEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 NOVEMBER) 
Date   T index  Conditions    
04 Nov   140    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 30% 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 during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 20% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Oct      130
Nov      100
Dec      98


2. FORECAST (05 NOVEMBER - 07 NOVEMBER)
Date   T index  Conditions       MUFs                              
05 Nov   110    Fair             Near predicted monthly values 
                                 tending to 10-20% depressed
06 Nov    95    Fair             Near predicted monthly values 
                                 to 10-20% depressed    
07 Nov    80    Fair-poor        Near predicted monthly values 
                                 to 10-20% depressed   

COMMENT: ASWFC SWF HF Communications Warning 108 was issued on 
2 November and is current for 3-5 Nov. ASWFC Preliminary HF Communications 
Warning 109 was issued on 4 November and is current for 5-7 Nov. 
Maximum usable frequencies (MUFs) were mostly near predicted 
values to 20-30% enhanced in the Australian region on UT day 
04-Nov. Australian region HF radio communication conditions were 
generally good. MUFs are expected to be near predicted monthly 
values for the first half of UT day 05-Nov, becoming depressed 
by 10-20% by the end of the day due to anticipated geomagnetic 
activity. Depressions are likely to persist over 05-07 Nov, as 
further geomagnetic activity is expected by the end of the forecast 
period. Isolated shortwave fadeouts are possible. Equatorial 
scintillation events are possible over 05-06 Nov.

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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