Viewing archive of Friday, 6 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 06 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 096 Issued at 2200Z on 06 Apr 2007 IA. Analysis of Solar Active Regions and Activity from 05/2100Z to 06/2100Z: 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 remain
at very low levels.
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
The geomagnetic field was at quiet levels. 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 07 and 08 April. A
recurrent coronal hole is expected to become geoeffective on 09
April with elevated conditions of minor storm to isolated severe
storm levels possible.
III. Event Probabilities 07 Apr to 09 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 06 Apr 071 Predicted 07 Apr-09 Apr 070/070/070 90 Day Mean 06 Apr 077
V. Geomagnetic A Indices
Observed Afr/Ap 05 Apr 003/004 Estimated Afr/Ap 06 Apr 003/004 Predicted Afr/Ap 07 Apr-09 Apr 002/005-008/010-015/020
VI. Geomagnetic Activity Probabilities 07 Apr to 09 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 20% | 25% |
| Minor storm | 01% | 05% | 15% |
| Major-severe storm | 01% | 01% | 10% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 35% |
| Minor storm | 05% | 10% | 20% |
| Major-severe storm | 01% | 05% | 15% |
All times in UTC
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