[Ips-dhfpr] IPS Daily HF Prop Report - 21 August 11

rwc rwc at ips.gov.au
Mon Aug 22 09:51:41 EST 2011


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 21/2330Z AUGUST 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 AUGUST) 
Date   T index  Conditions    
21 Aug    40    Fair-Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day,
      Depressed by 20% during local night.
   Niue Island Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.

PCA Event : No event.

Predicted Monthly T index for August:  59
2. FORECAST (22 AUGUST - 24 AUGUST)
Date   T index  Conditions       MUFs                              
22 Aug    55    Fair-Normal      Mostly near predicted monthly 
                                 values with 10-20% depressions 
                                 for far northern Australian 
                                 regions.
23 Aug    60    Normal           Near predicted monthly values    
24 Aug    60    Normal           Near predicted monthly values   

COMMENT: Mild depressions were observed over northern Australian 
regions at times during the past 24 hours. Mild depressions are 
expected at times over the next 24 hours primarily for far northern 
Australian to equatorial regions otherwise MUFs are expected 
to be mostly near predicted monthly values. Some periods of Spread-F 
and Sporadic-E conditions were observed during the past 24 hours 
which may have degraded HF conditions at times. Further isolated 
periods of Spread-F and Sporadic-E are expected over the next 
24 hours which may result in degraded HF conditions at times.
----------------------------------------------------------
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
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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