Viewing archive of Sunday, 11 March 2001
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 2001 Mar 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 070 Issued at 2200Z on 11 Mar 2001IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity was at low levels. The largest event of
the period was a C5 flare at 11/0856Z. Activity was observed in
newly numbered Region 9376 (S13E72), and in Region 9368 (N25W73)
during this X-ray event. Region 9376 produced additional minor
C-class flares. The level of activity in active Regions 9368 and
9372 (S16w76) tapered off considerably this period as both regions
approach the west limb. New Region 9377 (S10E01) was also numbered
today.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. An isolated M-class flare is still possible from
Regions 9368 or 9372 as they rotate around the west limb. An
isolated M-class is also possible from newly numbered Region 9376,
and Region 9373 (S08E48) as it continues to slowly develop.
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic field was quiet to unsettled. The greater than 2 MeV
electrons continue at moderately enhanced levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to continue at quiet to unsettled levels.
III. Event Probabilities 12 Mar to 14 Mar
| Class M | 50% | 50% | 50% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Mar 158 Predicted 12 Mar-14 Mar 155/150/145 90 Day Mean 11 Mar 163
V. Geomagnetic A Indices
Observed Afr/Ap 10 Mar 003/005 Estimated Afr/Ap 11 Mar 005/005 Predicted Afr/Ap 12 Mar-14 Mar 008/008-007/007-005/005
VI. Geomagnetic Activity Probabilities 12 Mar to 14 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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