Viewing archive of Tuesday, 21 March 2006
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 2006 Mar 21 2204 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 080 Issued at 2200Z on 21 Mar 2006 IA. Analysis of Solar Active Regions and Activity from 20/2100Z to 21/2100Z: Solar activity was low. Region 862 (S07W39) produced five low level C-class flares; the largest of which was a C2.5 that occurred at 21/0944 UTC. Region 862 has shown little change in area over the last 24 hours and maintains a beta gamma magnetic configuration.IB. Solar Activity Forecast
Solar activity is expected to be low
with a slight chance for an M-class flare from Region 862.
IIA. Geophysical Activity Summary 20-2100Z to 21-2100Z
The geomagnetic field was quiet to active. Isolated active periods
were due to continued effects of a coronal hole high speed stream.
The greater than 2 MeV electron flux at geosynchronous orbit reached
high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled on 22 and 23 March. On 24 March,
quiet to unsettled conditions with possible isolated active levels
are expected as a coronal hole high speed stream moves into
geoeffective position.
III. Event Probabilities 22 Mar to 24 Mar
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 21 Mar 077 Predicted 22 Mar-24 Mar 080/080/080 90 Day Mean 21 Mar 080
V. Geomagnetic A Indices
Observed Afr/Ap 20 Mar 014/022 Estimated Afr/Ap 21 Mar 012/010 Predicted Afr/Ap 22 Mar-24 Mar 008/008-005/008-008/012
VI. Geomagnetic Activity Probabilities 22 Mar to 24 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 20% |
| Minor storm | 10% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 30% |
| Minor storm | 10% | 10% | 15% |
| Major-severe storm | 01% | 01% | 05% |
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