[Ips-dhfpr] ASWFC Daily HF Prop Report - 05 January 23 issued 2331 UT on 05 Jan 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 JANUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 JANUARY) 
Date   T index  Conditions    
05 Jan    88    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Depressed 15-20% after local dawn.
   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
Dec      84
Jan      71
Feb      72


2. FORECAST (06 JANUARY - 08 JANUARY)
Date   T index  Conditions       MUFs                              
06 Jan    55    Fair-normal      Depressed 15 to 20%/near predicted 
                                 monthly values
07 Jan   100    Normal           Near to 15% above predicted 
                                 monthly values    
08 Jan   100    Normal-fair      Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 1 was issued on 
5 January and is current for 6-8 Jan. ASWFC HF Communications 
Warning 2 was issued on 5 January and is current for 6 Jan only. 
Maximum usable frequencies (MUFs) in the Australian region on 
UT day 05-Jan were near predicted monthly values to 30% enhanced. 
Spread F observed at Niue during local night. Southern Australian 
region MUFs are currently depressed 15-20% after local dawn this 
morning and are expected to gradually recover during the local 
day today. MUFs are generally expected to be near predicted monthly 
values to 15% enhanced over 07-08 Jan. There is a chance for 
mild degradation in HF conditions during local night on 08-Jan.

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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