[Ips-dhfpr] SWS Daily HF Prop Report - 22 December 17 issued 2330 UT on 22 Dec 2017 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 DECEMBER 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 DECEMBER) 
Date   T index  Conditions    
22 Dec   -11    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local.
   Niue Island Region:
      Depressed by 15% during local day.
      Depressed by 35% during local night.
      Depressed by 30% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly 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
Nov      -5
Dec      4
Jan      4


2. FORECAST (23 DECEMBER - 25 DECEMBER)
Date   T index  Conditions       MUFs                              
23 Dec   -10    Normal-fair      Near predicted monthly values
24 Dec   -20    Fair             Depressed 10 to 30%/near predicted 
                                 monthly values    
25 Dec   -20    Fair             Near predicted monthly values/depressed 
                                 10 to 30%   

COMMENT: Near predicted MUFs observed across Aus/NZ regions with 
Minor to Moderate depressions observed in the Niue Island region. 
Sporadic E blanketing also observed at times across the Australian 
region. Similar HF conditions with Minor to Moderate MUF depressions 
expected for the next three days.

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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
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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