[Ips-dhfpr] ASWFC Daily HF Prop Report - 04 December 22 issued 2330 UT on 04 Dec 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 DECEMBER) 
Date   T index  Conditions    
04 Dec    86    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 40% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   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 (05 DECEMBER - 07 DECEMBER)
Date   T index  Conditions       MUFs                              
05 Dec    80    Normal           Near predicted monthly values
06 Dec    80    Normal           Near predicted monthly values    
07 Dec    70    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the northern Australian 
region on UT day 4-Dec were near predicted monthly values to 
15% enhanced and near predicted monthly values in the southern 
Australian region. Significant amounts of sporadic E were observed 
across the Australian region during local night. MUFs are expected 
to be near predicted monthly values over 5-7 Dec, with a chance 
of mild depressions on 6-Dec due to coronal hole high speed wind 
streams effects and a a chance of mild depressions on 7-Dec due 
to a combination of coronal hole high speed wind stream effects 
and a possible glancing blow from a CME first observed on 4-Dec. 
Further significant sporadic E can be expected across the Australian 
region, particularly during local night.

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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