Viewing archive of Friday, 29 February 2008
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 2008 Feb 29 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 060 Issued at 2200Z on 29 Feb 2008IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z
Solar activity was very low. A weak CME was observed
at 29/0025Z from STEREO and LASCO imagery in the vicinity of Region
983, which is approaching the west limb at S06. This activity does
not appear to be Earth directed.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 28-2100Z to 29-2100Z
The geomagnetic field was at unsettled to minor storm conditions.
Solar wind speed remained elevated due to the continued influence of
a recurrent 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 at predominately unsettled levels, with isolated
active periods for 01-02 March. Conditions are expected to decrease
to quiet to unsettled levels on 03 March as the high speed stream
rotates out of a geoeffective position.
III. Event Probabilities 01 Mar to 03 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 29 Feb 070 Predicted 01 Mar-03 Mar 070/070/070 90 Day Mean 29 Feb 075
V. Geomagnetic A Indices
Observed Afr/Ap 28 Feb 017/022 Estimated Afr/Ap 29 Feb 015/015 Predicted Afr/Ap 01 Mar-03 Mar 012/015-008/008-005/005
VI. Geomagnetic Activity Probabilities 01 Mar to 03 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 10% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 05% | 01% | 01% |
All times in UTC
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