[Ips-dhfpr] ASWFC Daily HF Prop Report - 23 December 22 issued 2330 UT on 23 Dec 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 DECEMBER) 
Date   T index  Conditions    
23 Dec    76    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Depressed by 20% after local dawn.
   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 (24 DECEMBER - 26 DECEMBER)
Date   T index  Conditions       MUFs                              
24 Dec    70    Normal-fair      Near predicted monthly values 
                                 to 15% depressed
25 Dec    70    Normal           Near predicted monthly values    
26 Dec    70    Normal           Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 102 was issued on 23 
December and is current for 24-25 Dec. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 23-Dec were mostly 
near predicted monthly values, with 20% enhancements observed 
in the northern regions at local night and 25% depressions at 
local dawn. Significant sporadic-E was observed at most sites. 
MUFs are expected to be near monthly predicted values over 24-26 
Dec, with sporadic-E expected to continue over the period. Mild 
depressions are possible during local dawn over 24-25 Dec.

----------------------------------------------------------
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