[Ips-dhfpr] SWS Daily HF Prop Report - 23 December 17 issued 2335 UT on 23 Dec 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 DECEMBER 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 DECEMBER) 
Date   T index  Conditions    
23 Dec     1    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Depressed by 30% during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   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 (24 DECEMBER - 26 DECEMBER)
Date   T index  Conditions       MUFs                              
24 Dec    -5    Normal           Near predicted monthly values
25 Dec   -15    Fair-poor        Depressed 15%/near predicted 
                                 monthly values    
26 Dec   -15    Fair-poor        Depressed 15%/near predicted 
                                 monthly values   

COMMENT: Propagation conditions has improved over the last 24 
hours across Aus/NZ regions, ranging from Near predicted to slightly 
enhanced MUFs. Notable depressed MUFs by 25% were observed for 
Equatorial regions. Sporadic E blanketing also observed at times 
across the Australian region. Similar conditions may be expected 
to prevail today, 24 Dec followed by Minor to Moderate depressions 
on the subsequent days, possibly beginning from 25 Dec.

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