Viewing archive of Wednesday, 19 April 2006
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 2006 Apr 19 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 109 Issued at 2200Z on 19 Apr 2006IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z Solar activity remained at very low levels. No
significant activity was observed during the period. No new regions
were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low levels.
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic field was at quiet levels. The greater than 2 MeV
electron flux at geosynchronous orbit reached high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels throughout the period.
III. Event Probabilities 20 Apr to 22 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Apr 076 Predicted 20 Apr-22 Apr 075/075/075 90 Day Mean 19 Apr 078
V. Geomagnetic A Indices
Observed Afr/Ap 18 Apr 005/006 Estimated Afr/Ap 19 Apr 004/008 Predicted Afr/Ap 20 Apr-22 Apr 005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 20 Apr to 22 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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