[Ips-dhfpr] IPS Daily HF Prop Report - 20 December 14 issued 2330 UT on 20 Dec 2014

[Regional Warning Centre]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 DECEMBER 2014 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 DECEMBER) 
Date   T index  Conditions    
20 Dec   143    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 X1/3B    0028UT  probable   all    West Pacific

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Enhanced by 45% during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Enhanced 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
Nov      113
Dec      87
Jan      87


2. FORECAST (21 DECEMBER - 23 DECEMBER)
Date   T index  Conditions       MUFs                              
21 Dec   134    Fair             Near to 15% above predicted 
                                 monthly values
22 Dec    80    Normal           Near predicted monthly values/depressed 
                                 10 to 30%    
23 Dec   100    Normal           Near predicted monthly values   

COMMENT: IPS Preliminary HF Communications Warning 63 was issued 
on 19 December and is current for 21-22 Dec. MUFs were near predicted 
to enhanced over the UT day 20 December. Isolated cases of sporadic 
E were observed in the Australian region. Near monthly predicted 
MUFs to slightly enhanced values are expected today, 20 December. 
Expect near predicted values with periods of depressed conditions 
on 22 December due to an expected increase in geomagnetic activity.

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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

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