Viewing archive of Monday, 11 January 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 Jan 11 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 011 Issued at 2200Z on 11 Jan 2010IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z Solar activity was very low. Region 1040 (N29E10)
produced numerous B-class flares during the past 24 hours; the
largest of these was a B9 flare at 11/1356Z. Region 1040 showed
continued growth in areal coverage (300 millionths) and was
classified as a Cai-beta group with 25 spots.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low. There is a slight chance for an insolated M-class flare
from Region 1040.
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic field was quiet to unsettled. Solar wind observations
from the ACE spacecraft indicated the onset of a co-rotating
interaction region around 11/0844Z. Solar wind velocity increased
from around 357 km/s to a max of 542 km/s at around 11/1540Z. The
interplanetary magnetic field (IMF) activity showed an enhancement
of total field of 14 nT, and the southern component of the IMF
ranged between +10 nT and -9 nT.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet, with isolated unsettled levels for the next
two days (12-13 January) due to a coronal hole high-speed stream.
Quiet levels are expected on day three (14 January).
III. Event Probabilities 12 Jan to 14 Jan
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Jan 089 Predicted 12 Jan-14 Jan 090/090/090 90 Day Mean 11 Jan 074
V. Geomagnetic A Indices
Observed Afr/Ap 10 Jan 002/002 Estimated Afr/Ap 11 Jan 009/007 Predicted Afr/Ap 12 Jan-14 Jan 007/010-005/007-005/005
VI. Geomagnetic Activity Probabilities 12 Jan to 14 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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