Viewing archive of Sunday, 1 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 01 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 091 Issued at 2200Z on 01 Apr 2007IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z Solar activity has been very low.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
The geomagnetic field was active with periods of minor storming due
to a recurrent coronal hole high speed stream.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled to active for April 2 & 3. Periods of
minor storming remain possible. On April 4 the geomagnetic field is
expected to return to quiet conditions as the recurrent coronal hole
rotates out of its geoeffective position.
III. Event Probabilities 02 Apr to 04 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 01 Apr 072 Predicted 02 Apr-04 Apr 072/072/072 90 Day Mean 01 Apr 078
V. Geomagnetic A Indices
Observed Afr/Ap 31 Mar 002/003 Estimated Afr/Ap 01 Apr 016/030 Predicted Afr/Ap 02 Apr-04 Apr 014/020-012/015-005/005
VI. Geomagnetic Activity Probabilities 02 Apr to 04 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 15% |
| Minor storm | 20% | 20% | 10% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 40% | 20% |
| Minor storm | 25% | 25% | 15% |
| Major-severe storm | 10% | 10% | 05% |
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