[Ips-dhfpr] ASWFC Daily HF Prop Report - 27 July 24 issued 2333 UT on 27 Jul 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/27 JULY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 JULY) 
Date   T index  Conditions    
27 Jul   130    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M4.2    0237UT  possible   lower  E. Asia/Aust.
  M3.1    0547UT  possible   lower  E. Asia/Aust.
  M2.0    1041UT  possible   lower  European
  M2.7    1806UT  possible   lower  East Pacific/
                                    North American
  M3.4    1839UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 65% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.

PCA Event : No event.

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


2. FORECAST (28 JULY - 30 JULY)
Date   T index  Conditions       MUFs                              
28 Jul   130    Normal           Near predicted monthly values 
                                 to 15% enhanced
29 Jul   120    Normal-fair      Near predicted monthly values    
30 Jul   100    Fair-poor        Depressed 10 to 15%/near predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 27-Jul were 
near predicted values in the Australian region. Spread F was 
observed at Hobart and Niue during local night hours. Ionospheric 
equatorial scintillation was observed at Niue during the interval 
27/0655-0940UT. MUFs are expected to be near predicted values 
to 15% enhanced over 28-29 Jul. MUFs may become 15% depressed 
on 30-Jul and on 01-Aug due to anticipated geomagnetic activity 
induced from recent CMEs. Isolated minor 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