[Ips-wgr] IPS Weekly Geo. Report (29 April 04)

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 29 APRIL 2004, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (20 APRIL - 28 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               
 20 Apr   1100 0012    2     
 21 Apr   1222 1222    6     
 22 Apr   1211 1122    4    
 23 Apr   2333 4223   13    
 24 Apr   2223 3312    9    
 25 Apr   2333 3122   10    
 26 Apr   2110 1212    4    
 27 Apr   1221 0121    4    
 28 Apr   1121 1222    5    

*estimated from real time data

The geomagnetic activity remained at quiet levels for
the first three days of this period. The effect of a 
coronal hole raised the activity to quiet to active 
levels on 23 April. The activity declined to quiet to 
unsettled levels on 24 and 25 April and remained at 
quiet levels for the next two days.  The geomagnetic 
activity again rose slightly to quiet to unsettled 
levels on 28 April, probably due to the effect of a 
small coronal hole. 

2. FORECAST (29 APRIL - 29 MAY)
Disturbed Periods: 29 to 30 April, 02 to 03 May, 05 to 07 May,
		20 May, 27 May, 29 May.

Best Quiet Periods: 01 May, 04 May, 08 to 12 May, 14 to 19 May,
		21 to 25 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 

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