[Ips-wgr] IPS Weekly Geo. Report (10 April 03)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 10 APRIL 2003, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (01 APRIL - 09 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               
 01 Apr   3322 2333   12     
 02 Apr   2334 3333   15     
 03 Apr   2222 3323   10    
 04 Apr   3344 4333   19    
 05 Apr   3332 3443   17    
 06 Apr   2222 1311    6    
 07 Apr   1112 3212    6    
 08 Apr   4335 4323   21    
 09 Apr   3443 5323   21    

*estimated from real time data

Activity on 04-05 was due to coronal hole. Activity on 08-09 Apr 
was due to weak mass ejection and coronal hole effects.
There are now two large coronal holes on opposite sides of
the sun producing two extended periods of mild to moderate
activity.

2. FORECAST (10 APRIL - 10 MAY)
Disturbed Periods: 
10 to 14 Apr unsettled to active, chance minor storm periods  (coronal hole1 first arm)
16 to 19 Apr unsettled to active     (coronal hole 1 second arm of hole)
24 to 27 Apr unsettled to active.    (coronal hole 2)
01 to 02 May unsettled to active     (coronal hole 2)

Best Quiet Periods: 
20-22 Apr
03-06 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