Viewing archive of Wednesday, 28 March 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 Mar 28 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 087 Issued at 2200Z on 28 Mar 2007IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z Solar activity was very low. Newly numbered Region 949
(N07E62) produced two B-class events, a B1 at 1344Z and a B1 at
1928Z. The region appears to be a small H-class group at this time.
The remainder of the disk was quiet and stable.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field was mostly quiet to unsettled, with one active
period from 0300-0600Z. Solar wind speed was initially elevated
around 550-600 km/s but declined during the past 24 hours with day
end values around 450 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next three days (29-31 March).
III. Event Probabilities 29 Mar to 31 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 28 Mar 075 Predicted 29 Mar-31 Mar 075/075/075 90 Day Mean 28 Mar 078
V. Geomagnetic A Indices
Observed Afr/Ap 27 Mar 009/012 Estimated Afr/Ap 28 Mar 009/010 Predicted Afr/Ap 29 Mar-31 Mar 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 29 Mar to 31 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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