[Ips-wgr] IPS Weekly Geo. Report (17 April 03)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 17 APRIL 2003, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (08 APRIL - 16 APRIL)
K indices are in UT (0-24). For conversion to local time:
AEST = UT + 10 hours; ACST = UT + 9.5 hours; AWST = UT + 8 hours
        Australian Region*              
 Date     K-INDICES    A               
 08 Apr   4335 4323   21     
 09 Apr   3443 5323   21     
 10 Apr   3434 3343   19    
 11 Apr   3323 2333   13    
 12 Apr   3222 3213    9    
 13 Apr   2222 3211    7    
 14 Apr   2322 3323   11    
 15 Apr   3334 3223   14    
 16 Apr   3345 4344   25    

*estimated from real time data

Separate periods of elevated geomagnetic activity were observed
at the beginning and end of the past week in response to a 
broad, U-shaped equatorial coronal hole. The high speed solar 
wind stream from the second arm is continuing at the time of 
report issue, and is expected to decline early in the coming week.

2. FORECAST (17 APRIL - 17 MAY)
Disturbed Periods:
17-19 Apr, 24-27 Apr, 01-02 May, 13-17 May. 

Best Quiet Periods:
20-22 Apr, 04-07 May, 10-12 May.


PLEASE NOTE:  
At this time of the solar cycle, space weather conditions 
are frequently determined by short timescale events, not 
able to be forecasted a week in advance. 

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