Viewing archive of Thursday, 13 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 13 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 133 Issued at 2200Z on 13 May 2010IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z Solar activity was very low. Plage Region 1068 (S19W50)
produced a B2 flare at 13/0355Z. The visible disk remained spotless.
No new regions were assigned.
IB. Solar Activity Forecast
Solar activity is expected to be very
low through the period (14 - 16 May).
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
Geomagnetic field activity was at quiet levels through the period.
The greater than 2 MeV electron flux at geosynchronous orbit reached
high levels during the period.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be at quiet levels on day 1 (14 May). Field activity is
expected to increase to quiet to unsettled levels during days 2 - 3
(15 - 16 May) due to a coronal hole high-speed wind stream.
III. Event Probabilities 14 May to 16 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 13 May 069 Predicted 14 May-16 May 070/070/070 90 Day Mean 13 May 080
V. Geomagnetic A Indices
Observed Afr/Ap 12 May 004/005 Estimated Afr/Ap 13 May 003/005 Predicted Afr/Ap 14 May-16 May 005/005-007/007-007/012
VI. Geomagnetic Activity Probabilities 14 May to 16 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 15% | 15% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 20% | 20% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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