[Ips-dhfpr] ASWFC Daily HF Prop Report - 24 July 24 issued 2330 UT on 24 Jul 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 JULY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 JULY) 
Date   T index  Conditions    
24 Jul   135    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.6    0742UT  possible   lower  Mid East/Indian
  M3.0    1721UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 20% over the UT day.

PCA Event : 10MeV Proton/PCA Event Began at 0250UT 23/07, Ended at 2335UT 23/07
 and, 100MeV Proton/PCA Event Began at 0200UT 23/07, Ended at 1300UT 23/07

Monthly T index:
Month  T index
Jun      120
Jul      118
Aug      117


2. FORECAST (25 JULY - 27 JULY)
Date   T index  Conditions       MUFs                              
25 Jul   130    Normal           Near predicted monthly values 
                                 to 20% enhanced
26 Jul   130    Normal           Near predicted monthly values 
                                 to 20% enhanced    
27 Jul   130    Normal           Near predicted monthly values 
                                 to 20% enhanced   

COMMENT: ASWFC Preliminary HF Communications Warning 77 was issued 
on 22 July and is current for 24-25 Jul. ASWFC SWF HF Communications 
Warning 78 was issued on 22 July and is current for 23-25 Jul. 
Maximum usable frequencies (MUFs) on UT day 24-Jul were near 
predicted monthly values to 20% enhanced in the Australian region. 
Spread-F and sporadic-E were observed in Canberra and Niue during 
local night hours. Scintillation was observed at Niue from 0935 
to 0950 UT. MUFs are expected to be near predicted values over 
25-27 UT to 20% enhanced.

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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