Viewing archive of Wednesday, 13 March 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 Mar 13 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 072 Issued at 2200Z on 13 Mar 2002IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z Solar activity was moderate due to an M1/Sf at 12/2313
UTC in new Region 9871 (S21E70). This region rotated around the
east limb as a moderately-sized D-type sunspot group. Region 9866
(S11E20) remains the largest sunspot group and has developed mixed
polarities in its trailer portion. It has produced C-class subflare
activity during the day.
IB. Solar Activity Forecast
Solar activity is expected to be
moderate. Low-level M-flares are possible in Regions 9866 and 9871.
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled.
III. Event Probabilities 14 Mar to 16 Mar
| Class M | 50% | 50% | 50% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Observed 13 Mar 184 Predicted 14 Mar-16 Mar 190/195/200 90 Day Mean 13 Mar 216
V. Geomagnetic A Indices
Observed Afr/Ap 12 Mar 008/010 Estimated Afr/Ap 13 Mar 008/008 Predicted Afr/Ap 14 Mar-16 Mar 008/010-012/012-008/008
VI. Geomagnetic Activity Probabilities 14 Mar to 16 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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