[Ips-dhfpr] ASWFC Daily HF Prop Report - 01 August 23 issued 2330 UT on 01 Aug 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/01 AUGUST 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (01 AUGUST) 
Date   T index  Conditions    
01 Aug   108    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.0    0156UT  possible   lower  West Pacific
  M2.2    0447UT  possible   lower  E. Asia/Aust.
  M3.6    0657UT  possible   lower  Mid East/Indian
  M1.5    0909UT  possible   lower  Mid East/Indian
  M1.4    1409UT  possible   lower  South American/
                                    Atlantic
  M1.0    2151UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 45% during local night.
      Depressed by 25% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values 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 : No event.

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


2. FORECAST (02 AUGUST - 04 AUGUST)
Date   T index  Conditions       MUFs                              
02 Aug   110    Normal-fair      Near predicted monthly values
03 Aug   110    Normal           Near to 15% above predicted 
                                 monthly values    
04 Aug   100    Normal           Near to 15% above 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 1-Aug were near predicted monthly values with 
enhancements of up to 15% observed in the southern Australian 
region. Spread F was observed at Hobart and Canberra during local 
night hours. MUFs are expected to be near predicted monthly values 
on 2-Aug. MUFs are expected to be near predicted monthly values 
to 15% enhanced on 3-4 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