[Ips-wgr] IPS Weekly Geo. Report (13 November 03)
rwc at ips.gov.au
Thu Nov 13 12:29:39 EST 2003
SUBJ: IPS WEEKLY GEOPHYSICAL REPORT
ISSUED ON 13 NOVEMBER 2003, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
1. SUMMARY (04 NOVEMBER - 12 NOVEMBER)
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
Date K-INDICES A
04 Nov 3466 3233 31 A moderate (87nT) impulse was observed in
the IPS magnetomter data at 0626UT on 04 Nov.
05 Nov 2111 1133 6
06 Nov 2111 2253 11
07 Nov 3322 1112 7
08 Nov 1122 3433 11
09 Nov 3234 5333 19
10 Nov 3334 4444 22
11 Nov 4445 5544 34
12 Nov 3334 3443 19
*estimated from real time data
Geomagnetic activity was at mostly quiet to unsettled levels early in
the week. Late in the UT day 8 Nov the earth entered a high speed
coronal hole solar wind stream. Solar wind velocities increased
steadily during the following two days and remain elevated, leading to
extended periods of active to minor storm conditions, especially at
high latitudes. These coronal hole induced effects are likely to
continue for several more days.
2. FORECAST (13 NOVEMBER - 13 DECEMBER)
Disturbed Periods: 13-18 NOV, 24-28 NOV, 6-13 NOV.
Best Quiet Periods: 19-23 NOV, 01-04 DEC.
A number of active sunspot regions which produced major flares on their
last rotation are due to return during this period. Isolated periods of
intense geomagnetic activity are possible following flare-induced
shocks in the solar wind stream.
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
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Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au
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