Viewing archive of Thursday, 12 January 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 Jan 12 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 012 Issued at 2200Z on 12 Jan 2012IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z Solar activity was low. A long duration C2 x-ray event
began at 12/0754Z, peaked at 12/1001Z, and then persisted until
12/1216Z. It is believed that the source of the event was from
beyond the East limb. A limb event CME was observed by LASCO C2/C3
and also by the STEREO coronagraphs. The event is not believed to
have a geoeffective potential.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low for the next 3 days (13-15 January).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled with a chance for active conditions on days
1-2 (13-14 January) due to coronal hole (CH) high speed stream (HSS)
effects. Conditions should return to mostly quiet levels for day 3
(15 January).
III. Event Probabilities 13 Jan to 15 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 12 Jan 117 Predicted 13 Jan-15 Jan 115/115/115 90 Day Mean 12 Jan 145
V. Geomagnetic A Indices
Observed Afr/Ap 11 Jan 005/004 Estimated Afr/Ap 12 Jan 005/005 Predicted Afr/Ap 13 Jan-15 Jan 007/008-007/008-005/005
VI. Geomagnetic Activity Probabilities 13 Jan to 15 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 05% |
| Minor storm | 05% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 10% | 01% |
| Major-severe storm | 01% | 01% | 01% |
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