Viewing archive of Monday, 10 January 2011
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 2011 Jan 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 010 Issued at 2200Z on 10 Jan 2011IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z
Solar activity remained at very low levels. Occasional
low-level B-class flares occurred, most of which were produced by
Region 1140 (N32W61). Region 1140 showed no significant changes
during the period and remained an Hsx-type spot. Region 1145
(N16E27) also showed no significant changes and remained a
simply-structured Bxo-type group. Regions 1142 (S17W88) and 1144
(S16W49) both decayed to plage during the period. New Region 1146
(N23E46), a single spot Axx type, was numbered.
IB. Solar Activity Forecast
Solar activity is expected to be very
low through the period (11 - 13 January).
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
Geomagnetic field activity was at quiet to unsettled levels. ACE
solar wind data indicated Earth was in a subsiding coronal hole
high-speed stream. Solar wind velocities gradually decreased from
642 to 487 km/s during the period. IMF Bz was variable and ranged
from +5 nT to -3 nT. The greater than 2 MeV electron flux at
geosynchronous orbit reached high levels during the period.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be at quiet levels during the period (11 - 13 January).
III. Event Probabilities 11 Jan to 13 Jan
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Jan 083 Predicted 11 Jan-13 Jan 082/080/080 90 Day Mean 10 Jan 084
V. Geomagnetic A Indices
Observed Afr/Ap 09 Jan 004/005 Estimated Afr/Ap 10 Jan 006/006 Predicted Afr/Ap 11 Jan-13 Jan 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 11 Jan to 13 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 10% | 10% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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