[Ips-dhfpr] IPS Daily HF Prop Report - 23 June 07

rwc rwc at ips.gov.au
Sun Jun 24 09:50:55 EST 2007


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 23/2330Z JUNE 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 JUNE) 
Date   T index  Conditions    
23 Jun     5    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.
      Degraded conditions observed at times due to
      Sporadic-E and/or Spread-F conditions and/or
      a weak winter solar mininum ionosphere.

PCA Event : No event.

Predicted Monthly T index for June:   9
2. FORECAST (24 JUNE - 26 JUNE)
Date   T index  Conditions       MUFs                              
24 Jun     5    Normal           near predicted monthly values/depressed 
                                 5 to 10% 
25 Jun     5    Normal           near predicted monthly values/depressed 
                                 5 to 10%     
26 Jun     5    Normal           near predicted monthly values/depressed 
                                 5 to 10%    
COMMENT: Sporadic-E and/or Spread-F conditions were observed 
at times at most Aus/NZ stations during the past 24 hours. These 
conditions may have degraded communications, otherwise mostly 
normal conditions were observed for the Aus/NZ region. A weak 
winter solar minimum ionosphere also degraded conditions for 
high latitudes at times. Slight depressions are possible at times 
over the next few days otherwise mostly normal conditions are 
expected. Sporadic-E and/or Spread-F conditions may degrade communications 
at times during 24 June. A weak winter solar minimum ionosphere 
may also degrade conditions for high latitudes at times. 
----------------------------------------------------------
For an explanation of some of the terms in this report, goto
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
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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