[Ips-dhfpr] ASWFC Daily HF Prop Report - 23 January 23 issued 2330 UT on 23 Jan 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 JANUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 JANUARY) 
Date   T index  Conditions    
23 Jan   124    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
      Enhanced by 30% after local dawn.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 30% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
      Enhanced by 20% after local dawn.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 30% 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 (24 JANUARY - 26 JANUARY)
Date   T index  Conditions       MUFs                              
24 Jan   115    Normal-fair      Near to 15% above predicted 
                                 monthly values
25 Jan   115    Normal           Near to 15% above predicted 
                                 monthly values    
26 Jan   115    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 11 was issued on 
22 January and is current for 23-24 Jan. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 23-Jan were near predicted 
monthly values to 30% enhanced in the Southern Australian region 
and 15-20% enhanced in the Northern Australian region. Sporadic 
E was observed across the Southern Australian region and the 
majority of the Northern Australian region during local night. 
Spread F was observed at Hobart. MUFs are expected to be near 
predicted monthly values to 15% enhanced over 24-26 Jan. There 
is a slight chance of degraded conditions on 24-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