[Ips-dhfpr] IPS Daily HF Prop Report - 30 May 10

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 30/2330Z MAY 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (30 MAY) 
Date   T index  Conditions    
30 May     9    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 35% over the UT day.

PCA Event : No event.

Predicted Monthly T index for May:  24
2. FORECAST (31 MAY - 02 JUNE)
Date   T index  Conditions       MUFs                              
31 May     7    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 15% 
01 Jun    10    Normal-fair      Near predicted monthly values 
                                 to depressed 10%.     
02 Jun    12    Normal           Near predicted monthly values    
COMMENT: IPS HF Communications Warning 11 was issued on 30 May 
and is current for interval 30-31 May. Mild to significant MUF 
depressions were observed in the Australian region due to a rise 
in the geomagnetic activity levels and very low EUV radiation 
emitted from the sun, resulting from a low number of sunspots 
on the visible solar disc. Nearly similar conditions may be 
expected in this region on 31 May. Conditions are expected 
to gradually improve over the following two days. 
----------------------------------------------------------
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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