Viewing archive of Saturday, 20 February 2010
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 2010 Feb 20 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 051 Issued at 2200Z on 20 Feb 2010IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity was very low. Isolated B-class flares
were observed during the period.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low levels. There is a slight chance for an isolated C-class
flare.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
Geomagnetic field activity was quiet.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be at quiet levels throughout the forecast period (21-23
February).
III. Event Probabilities 21 Feb to 23 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Feb 084 Predicted 21 Feb-23 Feb 084/084/082 90 Day Mean 20 Feb 080
V. Geomagnetic A Indices
Observed Afr/Ap 19 Feb 003/003 Estimated Afr/Ap 20 Feb 002/005 Predicted Afr/Ap 21 Feb-23 Feb 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 Feb to 23 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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