Viewing archive of Tuesday, 7 April 2009
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 2009 Apr 07 2201 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 2009IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z Solar activity was very low. No flares were observed
during the past 24 hours. The solar disk remains spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for the next three days (08-10
April) due to a recurrent coronal high speed stream. Isolated
active conditions at mid latitudes and minor storming at high
latitudes are possible on 09 April.
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 070 Predicted 08 Apr-10 Apr 070/070/070 90 Day Mean 07 Apr 070
V. Geomagnetic A Indices
Observed Afr/Ap 06 Apr 002/003 Estimated Afr/Ap 07 Apr 002/005 Predicted Afr/Ap 08 Apr-10 Apr 007/008-010/015-007/008
VI. Geomagnetic Activity Probabilities 08 Apr to 10 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 35% | 30% |
| Minor storm | 05% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 35% |
| Minor storm | 10% | 15% | 10% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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