[Ips-dhfpr] ASWFC Daily HF Prop Report - 30 December 22 issued 2330 UT on 30 Dec 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/30 DECEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (30 DECEMBER) 
Date   T index  Conditions    
30 Dec   104    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.4    1528UT  possible   lower  South American/
                                    Atlantic
  M3.7    1938UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 20% 
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15-20% 
   Northern Australian Region:
      Enhanced by 15-30% 
   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 (31 DECEMBER - 02 JANUARY)
Date   T index  Conditions       MUFs                              
31 Dec    45    Normal-fair      Depressed 10 to 20%/near predicted 
                                 monthly values
01 Jan    90    Normal           Near predicted monthly values    
02 Jan    90    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 107 was issued on 
30 December and is current for 30 Dec to 1 Jan. Maximum usable 
frequencies (MUFs) in the Australian region on UT day 30-Dec 
were near predicted monthly values to 30% enhanced. Spread F 
was observed at Hobart during local night. MUFs are generally 
expected to be depressed 10 to 20% in the southern Australian 
region and near predicted monthly values for the northern Australian 
region on 31-Dec following weak overnight geomagnetic activity. 
Isolated minor fadeouts are possible.

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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