Viewing archive of Thursday, 21 February 2013
Daily bulletin on solar and geomagnetic activity from the SIDC
Issued: 2013 Feb 21 1156 UTC
SIDC Forecast
Solar flares
Eruptive (C-class flares expected, probability >= 50%)
Geomagnetism
Quiet (A<20 and K<4)
Solar protons
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 21 Feb 2013 | 110 | 005 |
| 22 Feb 2013 | 110 | 004 |
| 23 Feb 2013 | 110 | 004 |
Bulletin
Solar activity has been eruptive the last 24h featuring 6 C flare with the highest a C 8.2 flare peaking at February 20th 11:11 UT. All flaring activity came from AR Catania 95 (NOAA 11678). Flaring activity is expected to remain active especially from this AR which has a Beta-Gamma-Delta magnetic configuration. Solar wind speed is at 400 km/s and the IMF Bz component is low between -5 nT and 5 nT. Geomagnetic activity has been quiet to moderate and is expected to remain so for the next 48h.
Today's estimated international sunspot number (ISN): 050, based on 07 stations.Solar indices for 20 Feb 2013
| Wolf number Catania | /// |
| 10cm solar flux | 114 |
| AK Chambon La Forêt | 014 |
| AK Wingst | 008 |
| Estimated Ap | 007 |
| Estimated international sunspot number | 071 - Based on 26 stations |
Noticeable events summary
| Day | Begin | Max | End | Loc | Strength | OP | 10cm | Radio burst types | Catania/NOAA | |
|---|---|---|---|---|---|---|---|---|---|---|
| None | ||||||||||
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
All times in UTC
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