[Ips-dhfpr] SWS Daily HF Prop Report - 25 October 16 issued 2352 UT on 25 Oct 2016 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 OCTOBER 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 OCTOBER) 
Date   T index  Conditions    
25 Oct     4    Poor-fair      

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
      Depressed by 40% after local dawn.
   Southern Australian Region:
      Depressed by 30% during local day.
      Depressed by 20% during local night.
      Depressed by 30% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Sep      30
Oct      30
Nov      30


2. FORECAST (26 OCTOBER - 28 OCTOBER)
Date   T index  Conditions       MUFs                              
26 Oct   -20    Fair-poor        20 to 30% below predicted monthly 
                                 values
27 Oct   -20    Fair-poor        20 to 30% below predicted monthly 
                                 values    
28 Oct   -20    Normal-fair      20 to 30% below predicted monthly 
                                 values   

COMMENT: SWS HF Communications Warning 48 was issued on 24 October 
and is current for 25-27 Oct. Mildly depressed to depressed MUFs 
were observed for the UT day, 25 October, in the Aus/NZ region. 
Current depressions are most likely associated with low levels 
of ionising radiation and a rise in geomagnetic activity resulting 
in ionospheric storming. Similar conditions are expected over 
the next three days. Note there were isolated periods of sporadic 
E observed in the Australian region.

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