Viewing archive of Sunday, 23 May 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 May 23 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 143 Issued at 2200Z on 23 May 2010IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity was very low. The STEREO COR2 imagery
observed a CME around 23/1809Z. This CME was correlated with GOES
x-ray images originating from an area along a filament channel
located between N24W05 to N01W23. Associated with the CME was a
long duration B1 x-ray flare at 23/1801Z. Region 1072 (S15W09)
continues to grow in white light areal coverage and sunspot count
and has produced two low-level B-class flares during the period.
The region maintained a beta magnetic configuration.
IB. Solar Activity Forecast
Solar activity is expected to be very
low. There is a chance for a C-class flare, and a slight chance for
a M-class event, from Region 1072.
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field was quiet. The solar wind speed continued to
average around 370 km/s through the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet levels for the next three days (24-26 May).
III. Event Probabilities 24 May to 26 May
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 23 May 075 Predicted 24 May-26 May 076/076/078 90 Day Mean 23 May 078
V. Geomagnetic A Indices
Observed Afr/Ap 22 May 002/004 Estimated Afr/Ap 23 May 001/004 Predicted Afr/Ap 24 May-26 May 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 24 May to 26 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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