[Ips-dhfpr] IPS Daily HF Prop Report - 12 October 08

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 12/2330Z OCTOBER 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (12 OCTOBER) 
Date   T index  Conditions    
12 Oct   -24    Normal         

Flares: none.

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

PCA Event : No event.

Predicted Monthly T index for October:   2
2. FORECAST (13 OCTOBER - 15 OCTOBER)
Date   T index  Conditions       MUFs                              
13 Oct   -12    Normal-Fair      10 to 20% below predicted monthly 
                                 values 
14 Oct    -5    Normal           5 to 15% below predicted monthly 
                                 values     
15 Oct     0    Normal           0 to 10% below predicted monthly 
                                 values    
COMMENT: IPS HF Communications Warning 10 was issued on 11 October 
and is current for interval 12-13 October. Substantial depressions 
of 20% observed in HF critical frequencies observed across Aus/NZ 
and nearby equatorial regions due to geomagnetic disturbance 
from coronal hole high-spedd sola-wind. Expect solar wind speed 
and geomag levels to decline over the next two days and the ionosphere 
recover to near predicted monthly average. Some extra EUV flux 
from sunspot region AR1005 may aid recovery. 
----------------------------------------------------------
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 

IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information.  The views expressed in 
this message are those of the individual sender, unless 
specifically stated to be the views of IPS.  If you are not 
the intended recipient, please contact the sender immediately 
and delete all copies of this e-mail and attachments. 
Occasionally IPS sends email promoting IPS products and 
services to its mailing list customers. If you do not wish to 
receive this promotional material please email 
no-spam at ips.gov.au with the subject header:UNSUBSCRIBE"