[Ips-dhfpr] SWS Daily HF Prop Report - 11 December 16 issued 2333 UT on 11 Dec 2016 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/11 DECEMBER 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 DECEMBER) 
Date   T index  Conditions    
11 Dec    -9    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      No data available during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   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      3
Dec      24
Jan      23


2. FORECAST (12 DECEMBER - 14 DECEMBER)
Date   T index  Conditions       MUFs                              
12 Dec    -5    Normal           Depressed 15%/near predicted 
                                 monthly values
13 Dec     5    Normal           Near predicted monthly values    
14 Dec    15    Normal           Near predicted monthly values   

COMMENT: Minor to moderate depressions occurred across most Australian 
regions on UT day 11 December. These are due to loss in ionospheric 
ionisations associated with the disturbed geomagnetic conditions 
caused by the coronal hole. The two day outlook is for ionisation 
levels to gradually recover as the disturbed conditions are expected 
to diminish from today (12 December). HF support are expected 
to return to near monthly predicted levels from late 13 December. 
HF users are advised to use lower than the monthly predicted 
frequencies today, 12 December.

----------------------------------------------------------
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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