Viewing archive of Tuesday, 30 November 2004
Solar activity report
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2004 Nov 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 335 Issued at 2200Z on 30 Nov 2004IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity was low. There were three C-class events
during the past 24 hours; A C2 at 29/2137 UTC from Region 707
(S14W12), a C4/Sf at 0658 UTC from Region 708 (N11E27), and a C1 at
1102 UTC from Region 707. Region 707 has shown only minor
development during the day but does have some weak mixing of
magnetic polarity in the trailer portion of the group.
IB. Solar Activity Forecast
Solar activity is expected to be low
for the next three days (30 November - 02 December).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was predominantly unsettled to active during
the past 24 hours. Solar wind signatures show increasing velocity
(600-650 km/s), declining density, enhanced temperature, and regular
oscillations of the z-component of the interplanetary magnetic
field, all consistent with the presence of a high speed stream
driven by a coronal hole.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled to active for tomorrow (01 December) and
partway through the 2nd day (02 December). Thereafter activity should
begin to decline, with predominantly unsettled levels for the 3rd
day (03 December).
III. Event Probabilities 01 Dec to 03 Dec
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Nov 111 Predicted 01 Dec-03 Dec 115/115/115 90 Day Mean 30 Nov 108
V. Geomagnetic A Indices
Observed Afr/Ap 29 Nov 020/015 Estimated Afr/Ap 30 Nov 015/012 Predicted Afr/Ap 01 Dec-03 Dec 015/020-015/015-012/010
VI. Geomagnetic Activity Probabilities 01 Dec to 03 Dec
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 25% |
| Minor storm | 20% | 20% | 15% |
| Major-severe storm | 10% | 10% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 30% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 10% | 10% | 05% |
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