[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 July 23 issued 2331 UT on 07 Jul 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 JULY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 JULY) 
Date   T index  Conditions    
07 Jul    96    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M4.0    0629UT  possible   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 35% 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 (08 JULY - 10 JULY)
Date   T index  Conditions       MUFs                              
08 Jul    95    Normal-fair      Near predicted monthly values
09 Jul    85    Normal           Near predicted monthly values    
10 Jul    95    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 62 was issued on 
7 July and is current for 7-9 Jul. Maximum usable frequencies 
(MUFs) on UT day 7-Jul in the Australian region were generally 
near predicted monthly values. Spread F was observed during local 
night hours, particularly at higher latitudes. MUFs are expected 
to be near predicted monthly values over 8-10 Jul. Mild depressions 
may be experienced after local night on 8-Jul and on 9-Jul for 
southern Australian region if expected geomagnetic activity eventuates 
on 7-Jul. Isolated minor 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