[Ips-dhfpr] ASWFC Daily HF Prop Report - 26 July 23 issued 2330 UT on 26 Jul 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 JULY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 JULY) 
Date   T index  Conditions    
26 Jul   126    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.2    0428UT  possible   lower  E. Asia/Aust.
  M4.6    1037UT  possible   lower  European
  M2.0    1559UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Enhanced by 30% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 40% 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
Jun      98
Jul      91
Aug      88


2. FORECAST (27 JULY - 29 JULY)
Date   T index  Conditions       MUFs                              
27 Jul   115    Normal           Near predicted monthly values
28 Jul   120    Normal           Near predicted monthly values    
29 Jul   120    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 70 was issued on 
26 July and is current for 26-28 Jul. Maximum usable frequencies 
(MUFs) on UT day 26-Jul in the northern Australian region were 
generally near predicted monthly values. Enhancements of up to 
40% were observed in the southern Australian region. Spread F 
was observed at Hobart during local night hours. MUFs are expected 
to be near predicted monthly values over 27-29 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