[Ips-dhfpr] IPS Daily HF Prop Report - 26 May 10

rwc rwc at ips.gov.au
Thu May 27 09:45:51 EST 2010


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 26/2330Z MAY 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 MAY) 
Date   T index  Conditions    
26 May    10    Normal         

Flares: none.

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

PCA Event : No event.

Predicted Monthly T index for May:  24
2. FORECAST (27 MAY - 29 MAY)
Date   T index  Conditions       MUFs                              
27 May     6    Normal-fair      about 20% below predicted monthly 
                                 values 
28 May     6    Normal-fair      about 20% below predicted monthly 
                                 values     
29 May     8    Normal           near predicted monthly values    
COMMENT: IPS HF Communications Warning 9 was issued on 
25 May and is current for interval 27 May only. Mild MUF 
depressions were observed in the Australian region due to 
the lower EUV levels emitted from the sun, resulting from 
a low number of sunspots on the visible solar disc. Minor 
to moderated degradations in HF conditions may be expected 
on 27 and 28 May due to an expected rise in geomagnetic 
activity levels on these days. Mostly normal HF conditions 
may be expected on 29 May. 
----------------------------------------------------------
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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