Viewing archive of Tuesday, 10 February 2015
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 2015 Feb 10 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 41 Issued at 2200Z on 10 Feb 2015IA. Analysis of Solar Active Regions and Activity from 09-2100Z to 10-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M2 event observed at
09/2335Z from Region 2282 (N14E51). There are currently 4 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (11 Feb, 12 Feb,
13 Feb).
IIA. Geophysical Activity Summary 09-2100Z to 10-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
435 km/s at 10/0734Z. Total IMF reached 6 nT at 10/1837Z. The maximum
southward component of Bz reached -5 nT at 10/1250Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 295 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (11 Feb) and quiet levels
on days two and three (12 Feb, 13 Feb).
III. Event Probabilities 11 Feb to 13 Feb
| Class M | 30% | 30% | 30% |
| Class X | 05% | 05% | 05% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 10 Feb 141 Predicted 11 Feb-13 Feb 140/140/140 90 Day Mean 10 Feb 154
V. Geomagnetic A Indices
Observed Afr/Ap 09 Feb 005/006 Estimated Afr/Ap 10 Feb 007/007 Predicted Afr/Ap 11 Feb-13 Feb 007/008-007/008-007/008
VI. Geomagnetic Activity Probabilities 11 Feb to 13 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 25% | 25% | 25% |
| Major-severe storm | 20% | 20% | 20% |
All times in UTC
Latest news
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Tuesday, 8 October 2024
Double X-flares, glancing blow possible
Latest forum messages
AR13883 2024/11/04 CME 13Unspecified geomagnetic activity 1556Coronal holes 32AR 13883 99The 2024 Aurora Summit prize winner is... 2
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 | 2024/10/31 | X2.03 |
| Last M-flare | 2024/11/05 | M2.6 |
| Last geomagnetic storm | 2024/10/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2024 | 141.4 -74.1 |
| November 2024 | 215.8 +74.4 |
| Last 30 days | 161.1 +7.2 |