[Ips-dhfpr] ASWFC Daily HF Prop Report - 19 December 22 issued 2331 UT on 19 Dec 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 DECEMBER) 
Date   T index  Conditions    
19 Dec    79    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Near predicted monthly values.
   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 (20 DECEMBER - 22 DECEMBER)
Date   T index  Conditions       MUFs                              
20 Dec    70    Normal-fair      Near predicted monthly values
21 Dec    70    Normal-fair      Near predicted monthly values    
22 Dec    70    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 101 was issued on 
18 December and is current for 19-21 Dec. Maximum usable frequencies 
(MUFs) in the Australian regions on UT day 19-Dec were mostly 
near predicted monthly values. Sporadic-E was observed at most 
Australian sites during local night hours. MUFs are expected 
to be near predicted monthly values over 20-22 Dec. 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