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
Latest news
Sunday, 8 December 2024
X2.2 solar flare, SDO outage
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Latest forum messages
AR 13932 12Power transmission for all of us. And why I believe we are better prepared than ever for major solar events 11Strong far side CME 335Incoming & Unnumbered Active Regions 1353Unspecified geomagnetic activity 1750
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.1 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 103.3 -49.2 |
| Last 30 days | 114 -43.9 |