Viewing archive of Sunday, 10 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 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 041 Issued at 2200Z on 10 Feb 2002IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z Solar activity has been moderate. Region 9811 (S26W20)
produced an M1/2f event at 10/1848 UTC. Region 9825 (N12E57)
produced a C5/1f long duration event at 10/1928 UTC. Region 9821
(S14W11) continues to show growth in both area and spot count and is
currently an Esi beta-gamma group with approximately 33 spots. A
new region was numbered today as Region 9826 (S23E39).
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. Regions 9811, 9821, and 9825 are capable of producing
an isolated M-class event.
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic field has been quiet to unsettled. The greater than
2 MeV electrons at geosynchronous orbit were enhanced to moderate
levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled. The greater than 2 MeV electrons
at geosynchronous orbit are expected to be enhanced to moderate
levels through 11 February and returning to background levels around
12 February.
III. Event Probabilities 11 Feb to 13 Feb
| Class M | 60% | 60% | 60% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Feb 217 Predicted 11 Feb-13 Feb 220/225/225 90 Day Mean 10 Feb 223
V. Geomagnetic A Indices
Observed Afr/Ap 09 Feb 006/009 Estimated Afr/Ap 10 Feb 008/008 Predicted Afr/Ap 11 Feb-13 Feb 008/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 11 Feb to 13 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 20% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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