Viewing archive of Thursday, 10 February 2011
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 2011 Feb 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 041 Issued at 2200Z on 10 Feb 2011IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z Solar activity was low. Region 1153 produced a few
B-class and C-class events early in the period before rotating off
the disk. Region 1156 (S14E09) remained stable and quiet.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low over the next 3 days (11-13 February).
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic field was mostly quiet with an isolated period of
unsettled conditions between 10/06Z and 10/09Z at mid latitudes. The
greater than 2 MeV electron flux at geosynchronous orbit was at high
levels throughout the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be mostly quiet for the next 3 days (11-13 February).
III. Event Probabilities 11 Feb to 13 Feb
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Feb 091 Predicted 11 Feb-13 Feb 090/090/090 90 Day Mean 10 Feb 084
V. Geomagnetic A Indices
Observed Afr/Ap 09 Feb 001/002 Estimated Afr/Ap 10 Feb 001/005 Predicted Afr/Ap 11 Feb-13 Feb 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 11 Feb to 13 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
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