[Ips-dhfpr] ASWFC Daily HF Prop Report - 05 December 22 issued 2332 UT on 05 Dec 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 DECEMBER) 
Date   T index  Conditions    
05 Dec    90    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      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 (06 DECEMBER - 08 DECEMBER)
Date   T index  Conditions       MUFs                              
06 Dec    80    Normal           Near predicted monthly values
07 Dec    70    Normal-fair      Near predicted monthly values    
08 Dec    70    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 96 was issued on 
5 December and is current for 5-7 Dec. Maximum usable frequencies 
(MUFs) in the northern Australian region on UT day 5-Dec were 
near predicted monthly values to 25% enhanced and near predicted 
monthly values in the southern Australian region. Significant 
amounts of sporadic E were observed across the eastern and central 
Australian regions. MUFs are expected to be near predicted monthly 
values over 6-8 Dec, with a chance of mild depressions over 7-8 
Dec due to a combination of coronal hole high speed wind stream 
effects and a possible glancing blow on 7-Dec from a CME first 
observed on 4-Dec. Further significant sporadic E is expected 
across the Australian region.

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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