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

rwc rwc at ips.gov.au
Thu Jul 29 11:29:25 EST 2004


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

1. SUMMARY (20 JULY - 28 JULY)
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 Jul   2211 1122    5     
 21 Jul   2220 0101    3     
 22 Jul   1113 3345   16    A weak (17nT) impulse was observed in the IPS
                            magnetomter data at 1037UT on 22 Jul.
 23 Jul   3454 4423   24    
 24 Jul   3343 4334   19    
 25 Jul   4565 6556   57    
 26 Jul   4323 1236   21    
 27 Jul   5667 7645   80    
 28 Jul   3322 3234   13    

*estimated from real time data

Coronal mass ejection (CME) induced storm activity observed second half 
of week, 22, 25, 27 Jul. The solar region that produced these mass 
ejections is about to rotate off the solar disk, and is still active. 
A recent CME from this region is expected to reach the Earth on
30 July.  This region is due to return to the solar disk on around 
12 Aug.

2. FORECAST (29 JULY - 28 AUGUST)
Disturbed Periods: 30 July: Minor storm chance major storm.

No significant 27 day recurrent patterns. Mild activity
possible on 7-8 Aug and 21-22 Aug.

Note: Possible return of coronal mass ejection producing solar region after
12 Aug. CME induced activity may be experienced if this region returns.

Best Quiet Periods: 
1-5 Aug
10-11 Aug


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