Viewing archive of Saturday, 24 February 2007
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 2007 Feb 24 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 055 Issued at 2200Z on 24 Feb 2007IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z Solar activity was very low. No significant activity
was observed over the past 24 hours. Region 944 (S07E49) is the
only spotted region on the visible disk.
IB. Solar Activity Forecast
Solar activity is expected to continue
at very low levels.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled to active for the next three days (25-27
February). Isolated minor to major storm periods are possible on
25-26 February due to a recurrent coronal hole high speed stream.
III. Event Probabilities 25 Feb to 27 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 24 Feb 076 Predicted 25 Feb-27 Feb 077/078/079 90 Day Mean 24 Feb 082
V. Geomagnetic A Indices
Observed Afr/Ap 23 Feb 002/002 Estimated Afr/Ap 24 Feb 003/005 Predicted Afr/Ap 25 Feb-27 Feb 015/020-010/015-010/010
VI. Geomagnetic Activity Probabilities 25 Feb to 27 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 20% |
| Minor storm | 20% | 15% | 10% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 30% | 25% |
| Minor storm | 25% | 20% | 15% |
| Major-severe storm | 15% | 10% | 05% |
All times in UTC
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