[Ips-wgr] IPS Weekly Geo. Report (21 April 05)

rwc rwc at ips.gov.au
Thu Apr 21 13:02:27 EST 2005


SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 21 APRIL 2005, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (12 APRIL - 20 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               
 12 Apr   3333 4333   16     
 13 Apr   2444 4533   24     
 14 Apr   3433 4322   16    
 15 Apr   2333 3322   12    
 16 Apr   2111 1121    4    
 17 Apr   1220 1011    3    
 18 Apr   1222 3211    6    
 19 Apr   1221 2112    5    
 20 Apr   2434 4221   15    

*estimated from real time data
Coronal hole wind stream induced activity observed
12-15 Apr, and 20 Apr. 

2. FORECAST (21 APRIL - 21 MAY)
Disturbed Periods: 
21-23 Apr active periods only
01-02 May active, chance minor storm periods
10-11 May active
   21 May active

Best Quiet Periods: 
04-07 May
13-15 May
25-28 May


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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