[Ips-dhfpr] SWS Daily HF Prop Report - 30 October 19 issued 2331 UT on 30 Oct 2019

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/30 OCTOBER 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (30 OCTOBER) 
Date   T index  Conditions    
30 Oct   -24    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 35% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 25% during local day.
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Depressed by 15% during local day.
      Depressed by 20% 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
Sep      -5
Oct      -15
Nov      -16


2. FORECAST (31 OCTOBER - 02 NOVEMBER)
Date   T index  Conditions       MUFs                              
31 Oct   -20    Normal           Near predicted monthly values
01 Nov   -20    Normal           Near predicted monthly values    
02 Nov   -20    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region were moderately depressed to near predicted monthly values 
during UT day 30 October. The depressions are thought to be due 
to very low level of solar ionising flux. Sporadic-E and Spread-F 
occurrences were observed over some sites. For the next 3 UT 
days, 31 October - 02 November, MUFs are expected to be between 
moderately depressed to near predicted monthly values. Lower 
HF frequencies will be less impacted.

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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
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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