Viewing archive of Friday, 24 August 2012
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 2012 Aug 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 237 Issued at 2200Z on 24 Aug 2012IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z Solar activity was very low. No CMEs observed in the
past 24 hours are expected to be geoeffective. New Region 1554
(N16E12) was numbered overnight and has developed into a Dai type
spot group with a beta magnetic configuration.
IB. Solar Activity Forecast
Solar activity is expected to be very
low with a chance for C-class activity.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic field was at quiet to unsettled levels with active to
minor storm levels at high latitudes. The greater than 2 MeV
electron flux at geosynchronous orbit reached high levels during the
period.
IIB. Geophysical Activity Forecast
Geomagnetic activity is
expected to be at quiet to unsettled levels with isolated active
periods. A chance exists for minor to major storm levels at high
latitudes. Increased activity is due to a recurrent coronal hole
high speed stream.
III. Event Probabilities 25 Aug to 27 Aug
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 24 Aug 104 Predicted 25 Aug-27 Aug 105/110/110 90 Day Mean 24 Aug 124
V. Geomagnetic A Indices
Observed Afr/Ap 23 Aug 011/010 Estimated Afr/Ap 24 Aug 008/009 Predicted Afr/Ap 25 Aug-27 Aug 007/008-011/012-006/008
VI. Geomagnetic Activity Probabilities 25 Aug to 27 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 25% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 20% |
| Minor storm | 30% | 30% | 30% |
| Major-severe storm | 25% | 35% | 25% |
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