[Ips-dhfpr] ASWFC Daily HF Prop Report - 10 December 22 issued 2330 UT on 10 Dec 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/10 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (10 DECEMBER) 
Date   T index  Conditions    
10 Dec    97    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 20-35%.
   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 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Nov      77
Dec      70
Jan      70


2. FORECAST (11 DECEMBER - 13 DECEMBER)
Date   T index  Conditions       MUFs                              
11 Dec    65    Normal           Depressed 10 to 15%/near predicted 
                                 monthly values
12 Dec    70    Normal           Near predicted monthly values    
13 Dec    70    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 99 was issued on 
9 December and is current for 10-12 Dec. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 10-Dec were near predicted 
monthly values to 35% enhanced. Sporadic E was frequently observed. 
Spread F was observed at Hobart during local night hours. MUFs 
are expected to be generally near predicted monthly values, with 
15% depressions possible for southern Australian region after 
local dawn. 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