Viewing archive of Sunday, 15 August 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 Aug 15 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 227 Issued at 2200Z on 15 Aug 2010IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity was low. Region 1099 (N18W73) produced
several B-class flares and also a C5/Sf flare at 15/1830Z. The
SOHO-NASA spacecraft c2 imagery observed an eruptive filament at
15/0812Z near N35W40. The DSF is not expected to be geoeffective.
IB. Solar Activity Forecast
Solar activity is expected to be very
low with a chance for C-class flares.
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic field was at quiet levels. The greater than 2 MeV
electron flux at geosynchronous orbit reached high levels again
today.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be unsettled to active for the next three days. The
increase in activity is in response to a coronal hole high-speed
stream on day one (16 August). The activity on days two and three
(17 - 18 August) are in response to the CME observed on 14 August.
III. Event Probabilities 16 Aug to 18 Aug
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Aug 086 Predicted 16 Aug-18 Aug 085/085/085 90 Day Mean 15 Aug 077
V. Geomagnetic A Indices
Observed Afr/Ap 14 Aug 002/003 Estimated Afr/Ap 15 Aug 007/008 Predicted Afr/Ap 16 Aug-18 Aug 010/012-010/015-010/012
VI. Geomagnetic Activity Probabilities 16 Aug to 18 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 35% | 30% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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