[Ips-dhfpr] SWS Daily HF Prop Report - 25 November 18 issued 2330 UT on 25 Nov 2018 [SEC=UNCLASSIFIED]

Regional Warning Centre rwc at ips.gov.au
Mon Nov 26 10:30:20 EST 2018


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 NOVEMBER 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 NOVEMBER) 
Date   T index  Conditions    
25 Nov   -29    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 35% during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values 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
Oct      -17
Nov      -7
Dec      -7


2. FORECAST (26 NOVEMBER - 28 NOVEMBER)
Date   T index  Conditions       MUFs                              
26 Nov   -25    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 30%
27 Nov   -25    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 30%    
28 Nov   -25    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 30%   

COMMENT: MUFs ranged from minor depressions to near predicted 
monthly values for Northern AUS, Southern AUS/NZ and Antarctic 
regions for 25 Nov. MUFs depressions up to 35% during local night 
for Niue Island region. Incidents of Spread F and Sporadic E 
were observed at some Australian sites. Similar levels of ionospheric 
support expected for the next 3 days due to continued very low 
levels of ionising radiation from the Sun.

----------------------------------------------------------
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
PO Box 1386                         WWW: http://www.sws.bom.gov.au
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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