Viewing archive of Saturday, 7 April 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 Apr 07 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 097 Issued at 2200Z on 07 Apr 2007 IA. Analysis of Solar Active Regions and Activity from 06/2100Z to 07/2100Z: Solar activity was at very low levels. The visible disk remains spotless. No new regions were numbered today.IB. Solar Activity Forecast
Solar activity is expected to be at
very low levels.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic field was at quiet to unsettled levels today. The
greater than 2 MeV electron flux at geosynchronous orbit reached
high levels again today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels on 08 April.
Predominantly unsettled to active conditions are expected on 09
April due to a recurrent coronal hole high speed stream. Minor
storm to isolated major storm periods are possible with the onset of
the coronal hole. Unsettled to isolated active levels are expected
on 10 April as the coronal hole begins to wane.
III. Event Probabilities 08 Apr to 10 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Apr 071 Predicted 08 Apr-10 Apr 070/070/070 90 Day Mean 07 Apr 077
V. Geomagnetic A Indices
Observed Afr/Ap 06 Apr 002/004 Estimated Afr/Ap 07 Apr 002/005 Predicted Afr/Ap 08 Apr-10 Apr 008/010-015/020-010/010
VI. Geomagnetic Activity Probabilities 08 Apr to 10 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 25% | 20% |
| Minor storm | 05% | 15% | 10% |
| Major-severe storm | 01% | 10% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 35% | 20% |
| Minor storm | 10% | 20% | 10% |
| Major-severe storm | 05% | 15% | 05% |
All times in UTC
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