[Ips-dhfpr] ASWFC Daily HF Prop Report - 17 December 22 issued 2330 UT on 17 Dec 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 DECEMBER) 
Date   T index  Conditions    
17 Dec    92    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    1953UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
   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 (18 DECEMBER - 20 DECEMBER)
Date   T index  Conditions       MUFs                              
18 Dec    95    Normal           Near predicted monthly values
19 Dec    95    Normal           Near predicted monthly values    
20 Dec    95    Normal-fair      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 17-Dec were mostly near predicted monthly values 
to 20% enhanced. MUFs are expected to be generally near predicted 
monthly values to 15% enhanced over 18-20 Dec. 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