[Ips-dhfpr] ASWFC Daily HF Prop Report - 11 August 23 issued 2334 UT on 11 Aug 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/11 AUGUST 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 AUGUST) 
Date   T index  Conditions    
11 Aug   112    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 50% during local day.
      Enhanced by 90% during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : 10MeV Proton/PCA Event Began at 0105UT 08/08, Ended at 0915UT 10/08

Monthly T index:
Month  T index
Jul      103
Aug      88
Sep      84


2. FORECAST (12 AUGUST - 14 AUGUST)
Date   T index  Conditions       MUFs                              
12 Aug   110    Normal           Near to 15% above predicted 
                                 monthly values
13 Aug   110    Normal           Near to 15% above predicted 
                                 monthly values    
14 Aug   110    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 79 was issued on 
11 August and is current for 11-13 Aug. Maximum usable frequencies 
(MUFs) on UT day 11-Aug were near predicted monthly values to 
15% enhanced in the southern Australian region and near predicted 
monthly values in the northern Australian region. Spread-F was 
observed in Hobart and Canberra during local night hours. MUFs 
are expected to be near predicted monthly values to 15% enhanced 
over 12-14 Aug. 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