[Ips-dhfpr] IPS Daily HF Prop Report - 17 January 08

rwc rwc at ips.gov.au
Fri Jan 18 10:44:59 EST 2008


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 17/2330Z JANUARY 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 JANUARY) 
Date   T index  Conditions    
17 Jan    -5    Normal-fair    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Depressed by 25% 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 January:  12
2. FORECAST (18 JANUARY - 20 JANUARY)
Date   T index  Conditions       MUFs                              
18 Jan    -5    Normal           Below monthly values by (day/night); 
                                 5/10% for northern Australia; 
                                 5/10% for southern Australia; 
                                 5/10% for equatorial; 0/5% for 
                                 Antarctica. 
19 Jan     0    Normal           Below monthly values by (day/night); 
                                 5/10% for northern Australia; 
                                 5/5% for southern Australia; 
                                 5/10% for equatorial; 0/0% for 
                                 Antarctica.     
20 Jan     0    Normal           Near predicted monthly values    
COMMENT: At equatorial and sub-equatorial latitudes, extensive 
spread F was again observed, probably due to coronal hole induced 
geomagnetic disturbance which is now waning. At mid-latitudes 
strong pre-dawn sporadic (Es) which blanketed the F layer widespread. 
Night Es was common but often was not blanketing. Antarctic ionosphere 
was still moderately disturbed due to ongoing but reduced enhanced 
geomagnetic conditions (Unsettled to Active) and polar twin-cell 
convection caused by geomagnetic-IMF merging. 
----------------------------------------------------------
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 

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"





More information about the ips-dhfpr mailing list