Viewing archive of Sunday, 25 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 25 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 056 Issued at 2200Z on 25 Feb 2007IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z Solar activity was very low. No significant activity
was observed over the past 24 hours. Region 944 (S08E37) is the
only spotted region on the visible disk.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for the next three days (26 - 28
February). Isolated active periods are possible on 26 February due
to a recurrent coronal hole high speed stream.
III. Event Probabilities 26 Feb to 28 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Feb 077 Predicted 26 Feb-28 Feb 078/079/080 90 Day Mean 25 Feb 082
V. Geomagnetic A Indices
Observed Afr/Ap 24 Feb 002/001 Estimated Afr/Ap 25 Feb 008/015 Predicted Afr/Ap 26 Feb-28 Feb 010/015-010/010-005/005
VI. Geomagnetic Activity Probabilities 26 Feb to 28 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 10% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 05% | 01% | 01% |
All times in UTC
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