[Ips-dhfpr] IPS Daily HF Prop Report - 18 March 15 issued 2332 UT on 18 Mar 2015

rwc rwc at ips.gov.au
Thu Mar 19 10:32:21 EST 2015


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 MARCH 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 MARCH) 
Date   T index  Conditions    
18 Mar    25    Poor-fair      

Flares    Max     Fadeout    Freq.  Sectors
  M1.0 17/2336UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 35% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 50% during local day.
      Depressed by 35% during local night.
      Depressed by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 50% during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Feb      116
Mar      90
Apr      89


2. FORECAST (19 MARCH - 21 MARCH)
Date   T index  Conditions       MUFs                              
19 Mar    60    Fair-normal      15 to 25% below predicted monthly 
                                 values
20 Mar    90    Normal           Near predicted monthly values    
21 Mar   100    Normal           Near predicted monthly values   

COMMENT: IPS HF Communications Warning 8 was issued on 17 March 
and is current for 18-19 Mar. Lack of ionospheric support for 
HF communications and/or significant depressions were observed 
across the Australian region on 18-Mar. Moderate depressions 
are expected to persist during 19-Mar, with MUFs returning to 
near monthly predicted values on 20-Mar.

----------------------------------------------------------
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.

IPS Radio and Space Services        email: asfc at ips.gov.au
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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