[Ips-dhfpr] SWS Daily HF Prop Report - 12 January 18 issued 2339 UT on 12 Jan 2018 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 JANUARY 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (12 JANUARY) 
Date   T index  Conditions    
12 Jan    -6    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% 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
Dec      -10
Jan      4
Feb      4


2. FORECAST (13 JANUARY - 15 JANUARY)
Date   T index  Conditions       MUFs                              
13 Jan     4    Normal           Depressed 15 to 25%/near predicted 
                                 monthly values
14 Jan   -10    Normal           Depressed 15 to 25%/near predicted 
                                 monthly values    
15 Jan   -10    Normal           Depressed 15 to 25%/near predicted 
                                 monthly values   

COMMENT: Minor to moderate MUF depressions were observed across 
Aus/NZ regions on UT day 12 Jan. The depressions occurred during 
the local day in the Niue Island and Northern Australian Regions, 
and during the local night in the Southern Australian Region. 
Periods of Sporadic E blanketing were also evident. On UT day 
13 Jan, MUFs are expected to experience minor to moderate depressions 
at the start of the day but may return to near predicted monthly 
values if geomagnetic activity levels increase later in the day. 
MUFs are expected to experience minor to moderate depressions 
on 14-15 Jan.

----------------------------------------------------------
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
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
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