[Ips-dhfpr] ASWFC Daily HF Prop Report - 01 August 24 issued 2330 UT on 01 Aug 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/01 AUGUST 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (01 AUGUST) 
Date   T index  Conditions    
01 Aug   156    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.0 31/2250UT  possible   lower  East Pacific/
                                    North American
  M1.1    0054UT  possible   lower  West Pacific
  M6.0    0148UT  probable   lower  West Pacific
  M8.2    0709UT  probable   lower  Mid East/Indian
  M1.0    1615UT  possible   lower  South American/
                                    Atlantic
  M1.6    1647UT  possible   lower  South American/
                                    Atlantic
  M1.3    1729UT  possible   lower  South American/
                                    Atlantic
  M1.2    2022UT  possible   lower  East Pacific/
                                    North American
  M1.4    2308UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Enhanced by 20% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jul      131
Aug      119
Sep      119


2. FORECAST (02 AUGUST - 04 AUGUST)
Date   T index  Conditions       MUFs                              
02 Aug   135    Normal           Depressed 10 to 15%/near predicted 
                                 monthly values
03 Aug   130    Normal           Depressed 10 to 15%/near predicted 
                                 monthly values    
04 Aug   125    Normal-fair      Depressed 10 to 15%/near predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 83 was issued on 
31 July and is current for 1-2 Aug. Maximum usable frequencies 
(MUFs) on UT day 01-Aug were near predicted values to 20% enhanced 
in the Australian region. Ionospheric conditions in Brisbane 
were degraded during local night hours. Spread F and sporadic 
E were observed in Hobart during local night hours. Scintillation 
was observed in Niue from 0811 to 0833 UT. MUFs are expected 
to be near predicted monthly values over 02-04 Aug, with depressions 
of 10-15% possible. Shortwave fadeouts are probable.

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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