Viewing archive of Monday, 26 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 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 085 Issued at 2200Z on 26 Mar 2001IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was moderate. Two M-class events
occurred during the period. Region 9401 (N22E43) produced an M2/1N
event at 26/0239Z and Region 9393 (N18E27) produced an M2/1F event
at 26/1326Z. Several other C-class events occurred. Significant
growth was observed in Region 9393 and the region now has a
beta-gamma-delta magnetic configuration. Growth was also observed
in Regions 9390 (N15W08), 9396 (S06W32), and 9401. These numerous
regions above have been producing the bulk of activity during the
period. New region 9403 (S13E62) was numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be
moderate with the increasing chance of an X-class event occurring.
Continued M-class events are expected from any one of several
different active regions now on the sun. Region 9393 displays the
best potential for producing an X-class event.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be mostly quiet to unsettled with the possibility of
isolated active conditions.
III. Event Probabilities 27 Mar to 29 Mar
| Class M | 75% | 75% | 75% |
| Class X | 20% | 20% | 20% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Mar 264 Predicted 27 Mar-29 Mar 225/230/235 90 Day Mean 26 Mar 160
V. Geomagnetic A Indices
Observed Afr/Ap 25 Mar 005/008 Estimated Afr/Ap 26 Mar 008/008 Predicted Afr/Ap 27 Mar-29 Mar 008/008-008/008-005/005
VI. Geomagnetic Activity Probabilities 27 Mar to 29 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 20% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 25% |
| Minor storm | 15% | 15% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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