[Ips-dhfpr] ASWFC Daily HF Prop Report - 02 August 23 issued 2330 UT on 02 Aug 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/02 AUGUST 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (02 AUGUST) 
Date   T index  Conditions    
02 Aug   131    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.3    0812UT  possible   lower  Mid East/Indian
  M1.2    1050UT  possible   lower  European
  M1.7    1452UT  possible   lower  South American/
                                    Atlantic
  M1.3    1622UT  possible   lower  South American/
                                    Atlantic
  M1.1    1915UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Enhanced by 35% during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 20% during local night.
      Enhanced by 45% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 30% during local night.
   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
Jul      103
Aug      88
Sep      84


2. FORECAST (03 AUGUST - 05 AUGUST)
Date   T index  Conditions       MUFs                              
03 Aug   120    Normal           Near to 20% above predicted 
                                 monthly values
04 Aug   120    Normal           Near to 15% above predicted 
                                 monthly values    
05 Aug   100    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 73 was issued on 
1 August and is current for 1-3 Aug. Maximum usable frequencies 
(MUFs) on UT day 02-Aug were near predicted values to 30% enhanced, 
particularly during local night hours. Spread-F was observed 
at Hobart and sporadic-E was observed at Niue Island during local 
night hours. MUFs are expected to be near predicted values to 
20% enhanced over 03-05 Aug. 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