[Ips-dhfpr] SWS Daily HF Prop Report - 21 July 19 issued 2331 UT on 21 Jul 2019

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 JULY 2019 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    -4    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      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      -4
Jul      -12
Aug      -14


2. FORECAST (22 JULY - 24 JULY)
Date   T index  Conditions       MUFs                              
22 Jul    -4    Normal           Near predicted monthly values
23 Jul    -4    Normal           Near predicted monthly values    
24 Jul    -4    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) stayed mostly near 
predicted monthly values with periods of mild to moderate enhancements 
across the Australian/NZ regions on UT day 21 July. Sporadic-E 
and Spread-F occurrences were observed over some sites. MUFs 
in this region are expected to stay mostly near the predicted 
monthly values for the next three UT days (22 to 24 July).

----------------------------------------------------------
For an explanation of some of the terms in this report, go to
http://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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