Viewing archive of Thursday, 2 May 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 May 02 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 122 Issued at 2200Z on 02 May 2002IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z Solar activity was low. Only a few small C-class flares
occurred. Region 9934 (S18E62) is the largest and probably the most
magnetically complex sunspot group on the disk. The region appears
to contain some mixed polarities, and possibly a delta
configuration, but is still too close to the limb for certainty. New
Regions 9935 (S18E33) and 9936 (S15E42) were numbered.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. C-class events are possible from a number of regions.
Region 9934 appears to be the most capable of M-class activity.
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled.
III. Event Probabilities 03 May to 05 May
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 02 May 169 Predicted 03 May-05 May 175/180/185 90 Day Mean 02 May 190
V. Geomagnetic A Indices
Observed Afr/Ap 01 May 003/005 Estimated Afr/Ap 02 May 004/008 Predicted Afr/Ap 03 May-05 May 005/008-005/008-005/010
VI. Geomagnetic Activity Probabilities 03 May to 05 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
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