[Ips-dhfpr] ASWFC Daily HF Prop Report - 26 January 24 issued 2331 UT on 26 Jan 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 JANUARY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 JANUARY) 
Date   T index  Conditions    
26 Jan   133    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 40% during local night.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Mostly near predicted monthly values.
   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 (27 JANUARY - 29 JANUARY)
Date   T index  Conditions       MUFs                              
27 Jan   140    Normal-fair      Near to 20% above predicted 
                                 monthly values
28 Jan   145    Normal           Near to 20% above predicted 
                                 monthly values    
29 Jan   135    Normal-fair      Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC Preliminary HF Communications Warning 9 was issued 
on 23 January and is current for 25-27 Jan. ASWFC SWF HF Communications 
Warning 10 was issued on 26 January and is current for 26-28 
Jan. Maximum usable frequencies (MUFs) on UT day 26-Jan were 
near predicted values to 20% enhanced in the Australian region. 
Sporadic-E was observed at Hobart, Perth and Norfolk Island during 
local night hours. MUFs are expected to be near predicted values 
to 20% enhanced over 27-29 Jan, although some depressions may 
be observed by late 29-Jan due to possible coronal hole activity.

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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