[Ips-dhfpr] ASWFC Daily HF Prop Report - 13 January 24 issued 2330 UT on 13 Jan 2024 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/13 JANUARY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (13 JANUARY) 
Date   T index  Conditions    
13 Jan   162    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   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 (14 JANUARY - 16 JANUARY)
Date   T index  Conditions       MUFs                              
14 Jan   160    Normal           Near to 30% above predicted 
                                 monthly values
15 Jan   150    Normal-fair      Near to 25% above predicted 
                                 monthly values    
16 Jan   150    Normal-fair      Near to 25% predicted monthly 
                                 values   

COMMENT: ASWFC SWF HF Communications Warning 4 was issued on 
12 January and is current for 13-14 Jan. Maximum usable frequencies 
(MUFs) on UT day 13-Jan were enhanced 20-30% in the Australian 
region. Sporadic-E was observed during daylight hours on the 
eastern side of Australia, at sites such as Townsville, Norfolk 
Island and Canberra. MUFs are expected to be near predicted monthly 
values to up to 30% enhanced over 14-16 Jan. Sporadic-E is expected 
to persist, particularly at low latitudes. Isolated 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