[Ips-dhfpr] ASWFC Daily HF Prop Report - 24 January 23 issued 2331 UT on 24 Jan 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 JANUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 JANUARY) 
Date   T index  Conditions    
24 Jan   143    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 30% over the UT day.
   Niue Island Region:
      Enhanced by 15% during local day and night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 40% during local night.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 35% 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 (25 JANUARY - 27 JANUARY)
Date   T index  Conditions       MUFs                              
25 Jan   130    Normal           Near to 20% above predicted 
                                 monthly values
26 Jan   130    Normal           Near to 20% above predicted 
                                 monthly values    
27 Jan   130    Normal           Near to 20% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 24-Jan were 20-30% enhanced in Southern Australian 
regions and 15-40% enhanced in Northern Australia. Sporadic E 
was observed at several Australian sites. Spread F was observed 
at Hobart. MUFs are expected to be near predicted monthly values 
to 20% enhanced over 25-27 Jan. Shortwave fadeouts are possible. 
Sporadic E is possible during local night, affecting lower frequencies.

----------------------------------------------------------
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