[Ips-dhfpr] IPS Daily HF Prop Report - 17 April 16 issued 2331 UT on 17 Apr 2016 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 APRIL 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 APRIL) 
Date   T index  Conditions    
17 Apr    20    Poor-fair      

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 40% during local night.
   Southern Australian Region:
      Depressed by 35% during local day.
      Depressed by 25% during local night.
      Depressed by 25% 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
Mar      50
Apr      50
May      49


2. FORECAST (18 APRIL - 20 APRIL)
Date   T index  Conditions       MUFs                              
18 Apr    20    Poor-fair        Near predicted monthly values/depressed 
                                 25 to 35%
19 Apr    25    Poor-fair        Near predicted monthly values/depressed 
                                 20 to 30%    
20 Apr    25    Poor-fair        Near predicted monthly values/depressed 
                                 20 to 30%   

COMMENT: IPS HF Communications Warning 19 was issued on 16 April 
and is current for 17-19 Apr. Significantly depressed MUFs were 
observed across the Australian region on 17-Apr. Sporadic-E observed 
at Canberra 14-15 UT and Hobart 12-14 UT. Spread-F observed in 
the south for varying periods during the latter half of the UT 
day. MUF depressions are likely to persist for the next 3 days.

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