[Ips-dhfpr] ASWFC Daily HF Prop Report - 17 January 23 issued 2337 UT on 17 Jan 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 JANUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 JANUARY) 
Date   T index  Conditions    
17 Jan   125    Normal         

Flares   Max      Fadeout    Freq. 
  M1.8   2329UT   possible   lower.

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 35% during local night.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 55% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Dec      84
Jan      71
Feb      72


2. FORECAST (18 JANUARY - 20 JANUARY)
Date   T index  Conditions       MUFs                              
18 Jan   115    Normal-fair      Near to 15% above predicted 
                                 monthly values
19 Jan   115    Normal-fair      Near to 15% above predicted 
                                 monthly values    
20 Jan   115    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 7 was issued on 
14 January and is current for 16-18 Jan. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 17-Jan were near predicted 
monthly values to 30% enhanced in Southern Australia. Sporadic 
E was observed at Brisbane and Learmonth. MUFs are generally 
expected to be near predicted monthly values to 15% enhanced 
over 18-20 Jan. Mild degradations due to increased geomagnetic 
activity are possible over 18-19 Jan. Shortwave 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