Viewing archive of Monday, 15 October 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 Oct 15 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 289 Issued at 2200Z on 15 Oct 2012IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z Solar activity was low. There were several C-class
events during the last 24 hours. The largest of these was a
long-duration C4 at 1542Z from newly numbered Region 1593 (N17E78).
Region 1593 was the dominant producer of C-class level activity
although Region 1591 (N07E32) also contributed. Region 1591 showed a
slight growth trend during the period. New Region 1594 (S26E61) was
numbered today and is a small, simple bipolar region. The other
numbered regions on the disk were stable or decaying.
IB. Solar Activity Forecast
Solar activity is expected to be low
with a chance for an isolated M-class event from either Region 1591
or Region 1593.
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic field was quiet to unsettled during the past 24
hours. The solar wind velocity at the ACE spacecraft showed a steady
downward trend from initial values around 495 km/s to end-of-day
values near 400 km/s. 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 the next three days.
III. Event Probabilities 16 Oct to 18 Oct
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 15 Oct 137 Predicted 16 Oct-18 Oct 140/145/145 90 Day Mean 15 Oct 117
V. Geomagnetic A Indices
Observed Afr/Ap 14 Oct 020/020 Estimated Afr/Ap 15 Oct 008/009 Predicted Afr/Ap 16 Oct-18 Oct 007/008-007/008-007/008
VI. Geomagnetic Activity Probabilities 16 Oct to 18 Oct
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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