[Ips-dhfpr] ASWFC Daily HF Prop Report - 09 December 23 issued 2330 UT on 09 Dec 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/09 DECEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 DECEMBER) 
Date   T index  Conditions    
09 Dec   100    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.5    0955UT  possible   lower  Mid East/Indian
  M1.0    1319UT  possible   lower  European

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

PCA Event : No event.

Monthly T index:
Month  T index
Nov      114
Dec      100
Jan      98


2. FORECAST (10 DECEMBER - 12 DECEMBER)
Date   T index  Conditions       MUFs                              
10 Dec   100    Normal           Near predicted monthly values
11 Dec   100    Normal           Near predicted monthly values    
12 Dec   100    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 128 was issued on 
9 December and is current for 9-11 Dec. Maximum usable frequencies 
(MUFs) were near predicted monthly values in the Australian region 
on UT day 09-Dec. Sporadic E observed at times at Canberra. MUFs 
are expected to be near predicted monthly values over 10-12 Dec. 
Mild depressions of 10-15% may be experienced early in the UT 
day for the southern Australian region. Isolated 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