[Ips-dhfpr] ASWFC Daily HF Prop Report - 25 July 23 issued 2330 UT on 25 Jul 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 JULY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 JULY) 
Date   T index  Conditions    
25 Jul   108    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.5    0204UT  possible   lower  E. Asia/Aust.
  M1.6    2116UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 50% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jun      98
Jul      91
Aug      88


2. FORECAST (26 JULY - 28 JULY)
Date   T index  Conditions       MUFs                              
26 Jul   105    Normal-fair      Near predicted monthly values
27 Jul   100    Normal           Near predicted monthly values    
28 Jul   100    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 25-Jul in 
the Australian region were generally near predicted monthly values. 
Spread F was observed at Hobart during local night hours. MUFs 
are expected to be near predicted monthly values over 26-28 Jul. 
Isolated 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