[Ips-dhfpr] SWS Daily HF Prop Report - 28 December 21 issued 2331 UT on 28 Dec 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 DECEMBER 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 DECEMBER) 
Date   T index  Conditions    
28 Dec    48    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.8    0402UT  possible   lower  E. Asia/Aust.
  M1.5    1612UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 35% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   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      3
Dec      33
Jan      36


2. FORECAST (29 DECEMBER - 31 DECEMBER)
Date   T index  Conditions       MUFs                              
29 Dec    45    Normal           Near predicted monthly values
30 Dec    45    Normal           Near predicted monthly values    
31 Dec    45    Normal           Near predicted monthly values   

COMMENT: MUFs in the Australian region on UT day 28 December 
were near predicted monthly values to 35% enhanced. MUFs are 
expected to be mostly near predicted monthly values with possible 
daylight fadeouts on UT days 29-31 December.

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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.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
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