[Ips-dhfpr] ASWFC Daily HF Prop Report - 20 January 23 issued 2331 UT on 20 Jan 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 JANUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 JANUARY) 
Date   T index  Conditions    
20 Jan   111    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Enhanced by 25% during local night.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced by 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 (21 JANUARY - 23 JANUARY)
Date   T index  Conditions       MUFs                              
21 Jan   120    Normal           Near to 15% above predicted 
                                 monthly values
22 Jan   120    Normal           Near to 15% above predicted 
                                 monthly values    
23 Jan   120    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 20-Jan were near predicted monthly values to 
20% enhanced. Significant sporadic E was observed at Brisbane, 
Canberra and Cocos Islands during local night, with small amounts 
of sporadic E observed across the Australian region. MUFs are 
expected to be near predicted monthly values to 15% enhanced 
over 21-23 Jan, with a slight chance of depressed conditions 
on 23-Jan due to possible geomagnetic activity. Shortwave fadeouts 
are possible. Sporadic E is possible during local night, affecting 
lower frequencies.

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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