[Ips-dhfpr] SWS Daily HF Prop Report - 04 July 22 issued 2330 UT on 04 Jul 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 JULY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 JULY) 
Date   T index  Conditions    
04 Jul    53    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   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      60
Jul      65
Aug      67


2. FORECAST (05 JULY - 07 JULY)
Date   T index  Conditions       MUFs                              
05 Jul    60    Normal           Near predicted monthly values
06 Jul    60    Normal-fair      Near predicted monthly values    
07 Jul    60    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 04-Jul were 
near predicted monthly values, with depressions of 15-30% observed 
at some sites due to CME impacts. Spread-F was observed during 
local night hours at Darwin, Brisbane and Canberra, and frequent 
sporadic-E was observed at Darwin and Cocos Island. MUFs are 
expected to be near predicted monthly values over 05-07 Jul, 
with degraded conditions possible for the southern Australian 
region from 06-Jul due to coronal hole high speed wind stream 
induced geomagnetic activity.

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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.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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