[Ips-dhfpr] ASWFC Daily HF Prop Report - 20 January 24 issued 2330 UT on 20 Jan 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 JANUARY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 JANUARY) 
Date   T index  Conditions    
20 Jan   154    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 20% during local night.
      Enhanced by 30% after local dawn.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Dec      110
Jan      106
Feb      105


2. FORECAST (21 JANUARY - 23 JANUARY)
Date   T index  Conditions       MUFs                              
21 Jan   160    Normal           Near to 30% above predicted 
                                 monthly values
22 Jan   150    Fair             Near to 20% above predicted 
                                 monthly values    
23 Jan   100    Normal-fair      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 20-Jan were 
enhanced by up to 30% in the northern Australian region and were 
near predicted monthly values to 20% enhanced in the southern 
Australian region. Brief sporadic E was observed across the Australian 
region, mostly during local night hours. MUFs are expected to 
be near predicted monthly values to 30% enhanced on 21-Jan and 
near predicted monthly values to 20% enhanced on 22-Jan. MUFs 
are expected to be near monthly predicted values on 23-Jan, with 
the possibility of depressions in the southern Australian region 
due to anticipated geomagnetic activity on 22-23 Jan. Brief periods 
of sporadic E are expected to persist over 21-23 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