[Ips-dhfpr] SWS Daily HF Prop Report - 31 October 18 issued 2330 UT on 31 Oct 2018 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/31 OCTOBER 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (31 OCTOBER) 
Date   T index  Conditions    
31 Oct   -25    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Depressed by 30% during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Depressed by 20% 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
Sep      0
Oct      -5
Nov      -5


2. FORECAST (01 NOVEMBER - 03 NOVEMBER)
Date   T index  Conditions       MUFs                              
01 Nov   -20    Normal           Near predicted monthly values
02 Nov    20    Normal           Near predicted monthly values    
03 Nov   -10    Normal-fair      Near predicted monthly values   

COMMENT: MUFs were mainly near the monthly predicted levels over 
the Southern Australian and Antarctic region during UT day 31 
October. MUF depressions of up to 30% were observed in the lower 
latitude regions of Australia during this UT day. Very low levels 
of ionisation radiation from the Sun seems to be the main reason 
for these MUF depressions. Minor depressions to near monthly 
predicted MUFs are expected in the Aus/NZ regions for the next 
three days (UT days 1-3 November).

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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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