Viewing archive of Thursday, 23 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 23 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 236 Issued at 2200Z on 23 Aug 2012IA. Analysis of Solar Active Regions and Activity from 22-2100Z to 23-2100Z Solar activity was very low. There were a few low level
B-class flares observed. All spotted regions were quiet and stable.
New Region 1553 (S23E50), an Hsx/alpha type group, was numbered. No
Earth-directed CMEs were observed.
IB. Solar Activity Forecast
Solar activity is expected to be very
low with a slight chance for C-class flares for the next three days
(24-26 August).
IIA. Geophysical Activity Summary 22-2100Z to 23-2100Z
The geomagnetic field was quiet to unsettled. The greater than 2 MeV
electron flux at geosynchronous orbit reached high levels during the
period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled for days 1-2 (24-25 August). Day
3 (26 August) is expected to be quiet to unsettled with a slight
chance for an active period due to a high speed stream from a
coronal hole.
III. Event Probabilities 24 Aug to 26 Aug
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 23 Aug 097 Predicted 24 Aug-26 Aug 100/100/105 90 Day Mean 23 Aug 124
V. Geomagnetic A Indices
Observed Afr/Ap 22 Aug 006/005 Estimated Afr/Ap 23 Aug 008/009 Predicted Afr/Ap 24 Aug-26 Aug 006/005-006/005-008/010
VI. Geomagnetic Activity Probabilities 24 Aug to 26 Aug
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 15% |
| Minor storm | 01% | 01% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 25% |
| Major-severe storm | 05% | 05% | 25% |
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