[Ips-dhfpr] ASWFC Daily HF Prop Report - 02 December 23 issued 2331 UT on 02 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/02 DECEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (02 DECEMBER) 
Date   T index  Conditions    
02 Dec    22    Poor           

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 40% during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Northern Australian Region:
      Depressed by 45% during local day.
      Depressed by 35% during local night.
   Southern Australian Region:
      Depressed by 40% during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Nov      114
Dec      98
Jan      95


2. FORECAST (03 DECEMBER - 05 DECEMBER)
Date   T index  Conditions       MUFs                              
03 Dec    90    Normal           Near predicted monthly values
04 Dec    70    Normal-fair      Depressed 15%/near predicted 
                                 monthly values    
05 Dec    75    Normal-fair      Depressed 15%/near predicted 
                                 monthly values   

COMMENT: ASWFC HF Communications Warning 124 was issued on 2 
December and is current for 2-4 Dec. Maximum usable frequencies 
(MUFs) were depressed by 20-45% in the Australian region on UT 
day 02-Dec due to recent geomagnetic activity. MUFs are expected 
to be near predicted monthly values on UT day 03-Dec. Depressions 
of 15% are possible over 04-05 Dec due an expected increase in 
geomagnetic activity. Isolated minor 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