[Ips-dhfpr] SWS Daily HF Prop Report - 21 July 22 issued 2330 UT on 21 Jul 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 JULY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 JULY) 
Date   T index  Conditions    
21 Jul    69    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 50% during local day.
      Depressed by 15% during local night.
      Depressed by 30% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jun      60
Jul      65
Aug      67


2. FORECAST (22 JULY - 24 JULY)
Date   T index  Conditions       MUFs                              
22 Jul    65    Normal-fair      Near predicted monthly values
23 Jul    65    Normal-fair      Near predicted monthly values    
24 Jul    65    Normal-fair      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 21-Jul were 
near monthly predicted values. Spread-F was observed across the 
Australian region during local night hours. Significantly enhanced 
HF conditions were observed at Cocos Islands over local day. 
MUFs are generally expected to be near monthly predicted values 
over 22-24 Jul, mild degradations are possible over 22-24 Jul 
due to an increase in geomagnetic activity. 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.

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
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