Viewing archive of Sunday, 3 February 2002
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 2002 Feb 03 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 034 Issued at 2200Z on 03 Feb 2002IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity was at low levels. C4/Sf flares
occurred in Region 9807 (S27E26) at 03/0553 UTC and in Region 9802
(S14W31) at 03/1519 UTC, these being the largest flares for the
period. Region 9807 has shown some decay since yesterday in spot
complex. The beta-gamma-delta magnetic structure in Region 9802
remains intact. Region 9800 had no optically correlated flares
today and continues to show decay in both umbral coverage and
magnetic complexity. New Regions 9813 (S24W13), 9814 (N07E15), and
9815 (N12E70) were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be at
predominantly low to moderate levels. A slight chance for major
flare activity is possible.
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic field activity was at quiet to unsettled levels.
IIB. Geophysical Activity Forecast
The geomagnetic field activity
is expected to be quiet to unsettled through days one and two of the
forecast period. Day three may see active levels with possible
minor storm conditions due to the onset of a favorably positioned
coronal hole.
III. Event Probabilities 04 Feb to 06 Feb
| Class M | 50% | 50% | 50% |
| Class X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Observed 03 Feb 233 Predicted 04 Feb-06 Feb 235/230/225 90 Day Mean 03 Feb 225
V. Geomagnetic A Indices
Observed Afr/Ap 02 Feb 014/018 Estimated Afr/Ap 03 Feb 005/006 Predicted Afr/Ap 04 Feb-06 Feb 005/005-005/005-010/015
VI. Geomagnetic Activity Probabilities 04 Feb to 06 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 25% |
| Minor storm | 05% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 30% |
| Minor storm | 05% | 05% | 15% |
| Major-severe storm | 01% | 01% | 05% |
All times in UTC
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