Viewing archive of Wednesday, 27 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 27 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 058 Issued at 2200Z on 27 Feb 2008IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field was quiet to unsettled. Solar wind
measurements at the ACE spacecraft indicated signatures consistent
with a co-rotating interaction region around 27/1400Z. 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 unsettled to active conditions with isolated minor
storm levels at high latitudes for 28-29 February due to a coronal
hole high speed stream. Predominately unsettled conditions are
expected for 01 March.
III. Event Probabilities 28 Feb to 01 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Feb 071 Predicted 28 Feb-01 Mar 070/070/070 90 Day Mean 27 Feb 075
V. Geomagnetic A Indices
Observed Afr/Ap 26 Feb 002/003 Estimated Afr/Ap 27 Feb 008/010 Predicted Afr/Ap 28 Feb-01 Mar 015/015-012/015-010/010
VI. Geomagnetic Activity Probabilities 28 Feb to 01 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 15% |
| Minor storm | 10% | 05% | 05% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 20% |
| Minor storm | 15% | 15% | 10% |
| Major-severe storm | 05% | 05% | 05% |
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