[Ips-dhfpr] ASWFC Daily HF Prop Report - 05 July 23 issued 2331 UT on 05 Jul 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 JULY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 JULY) 
Date   T index  Conditions    
05 Jul    81    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.0    1859UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   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 (06 JULY - 08 JULY)
Date   T index  Conditions       MUFs                              
06 Jul    80    Normal           Near predicted monthly values
07 Jul    80    Fair             Near predicted monthly values    
08 Jul    80    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 05-Jul in 
the Australian region were generally near predicted monthly values. 
Spread F was occasionally observed during local night hours. 
MUFs are expected to be near predicted monthly values over 06-08 
Jul. Degraded HF conditions may be experienced during local night 
hours over 07-08 Jul due to an anticipated arrival of a CME. 
Mild depressions may be experienced after local dawn on 08-Jul 
for southern Australian region if expected geomagnetic activity 
eventuates on 07-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