[Ips-wgr] IPS Weekly Geo. Report (05 June 03)
rwc
rwc at ips.gov.au
Thu Jun 5 12:12:48 EST 2003
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 05 JUNE 2003, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (27 MAY - 04 JUNE)
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
27 May 3323 3354 19
28 May 4344 4434 24
29 May 4334 5677 61
30 May 5543 3534 30 A weak (23nT) impulse was observed in the
IPS magnetomter data at 1625UT on 30 May.
31 May 4431 2212 12
01 Jun 2332 3233 12
02 Jun 4444 4423 23
03 Jun 3334 3334 18
04 Jun 3334 3332 15
*estimated from real time data
Geomagnetic activity has been elevated at unsettled to minor storm
levels most of the week. The major cause has been recurrent coronal
holes producing elevated solar wind parameters. At present the
earth is under the influence of a high speed wind stream from a large
south solar hemisphere coronal hole with unsettled to active
conditions expected for several more days. Mid week some isolated
disturbance was produced by solar wind shocks resulting from X and
M-class flare activity produced by solar region 365. This region
has now rotated beyond the west solar limb.
B.
2. FORECAST (05 JUNE - 05 JULY)
Disturbed Periods: 5-9 Jun, 23Jun-03Jul.
Best Quiet Periods: 10-15 Jun, 20-21 Jun.
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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