Viewing archive of Saturday, 3 April 2010
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 2010 Apr 03 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 093 Issued at 2200Z on 03 Apr 2010IA. Analysis of Solar Active Regions and Activity from 02-2100Z to 03-2100Z Solar activity was very low. Region 1059 (S22W15)
produced a long-duration B7 x-ray event at 0954Z which was
associated with a halo CME. The CME plane-of-sky speed was estimated
to be about 500 km/s. Regions 1059 and 1057 (N16W72) were generally
unchanged during the past 24 hours.
IB. Solar Activity Forecast
Solar activity is expected to be very
low for the next three days (4-6 April). There is however, a slight
chance for an isolated C-class event.
IIA. Geophysical Activity Summary 02-2100Z to 03-2100Z
The geomagnetic field was quiet to unsettled during the past 24
hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next two days (4-5 April). An increase
to quiet to unsettled with a chance for an active period is expected
late on the third day (6 April) due to possible effects from a
favorably positioned coronal hole.
III. Event Probabilities 04 Apr to 06 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 03 Apr 077 Predicted 04 Apr-06 Apr 078/080/080 90 Day Mean 03 Apr 083
V. Geomagnetic A Indices
Observed Afr/Ap 02 Apr 010/012 Estimated Afr/Ap 03 Apr 005/008 Predicted Afr/Ap 04 Apr-06 Apr 005/005-005/005-007/008
VI. Geomagnetic Activity Probabilities 04 Apr to 06 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 25% |
| Minor storm | 01% | 01% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 30% |
| Minor storm | 01% | 01% | 15% |
| Major-severe storm | 01% | 01% | 01% |
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