Viewing archive of Monday, 11 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 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 042 Issued at 2200Z on 11 Feb 2002IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity was low. Only low level C-class events
observed during the period from Region 9821 (S13W25), 9822 (N18E26),
and 9825 (N12E43). Two new regions were numbered today as Region's
9827 (S25W43) and 9828 (S15E50).
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. An isolated M-class event is possible from Region 9821
and 9825.
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic field has been quiet to active. 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. Isolated active conditions are
possible for 13 February with the influence of a high speed stream.
The greater than 2 Mev electrons are expected to be enhanced to
moderate levels through 13 February.
III. Event Probabilities 12 Feb to 14 Feb
| Class M | 50% | 50% | 50% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Feb 202 Predicted 12 Feb-14 Feb 205/210/215 90 Day Mean 11 Feb 222
V. Geomagnetic A Indices
Observed Afr/Ap 10 Feb 007/008 Estimated Afr/Ap 11 Feb 012/015 Predicted Afr/Ap 12 Feb-14 Feb 008/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 12 Feb to 14 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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