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Daily bulletin on solar and geomagnetic activity from the SIDC
Emesso: 2017 Feb 13 1230 UTC
SIDC Forecast
Brillamenti solari
Quiet conditions (<50% probability of C-class flares)
Geomagnetism
Quiet (A<20 and K<4)
Protoni solari
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 13 Feb 2017 | 077 | 003 |
| 14 Feb 2017 | 077 | 006 |
| 15 Feb 2017 | 077 | 007 |
Bulletin
In the past 24 hours, no C flares were observed. Very low solar activity (no C flares) is expected in the next 24 hours. Solar wind speed measured by DSCOVR varied between about 320 and 350 km/s in the past 24 hours, while the magnitude of the Interplanetary Magnetic Field (IMF) varied between about 1 and 8 nT. Quiet geomagnetic conditions (K Dourbes between 1 and 2; NOAA Kp between 0 and 2) were registered in the past 24 hours. Quiet to unsettled levels (K Dourbes < 4) are expected on February 13, 14 and 15.
Today's estimated international sunspot number (ISN): 016, based on 21 stations.Solar indices for 12 Feb 2017
| Wolf number Catania | /// |
| 10cm solar flux | 076 |
| AK Chambon La Forêt | 008 |
| AK Wingst | 004 |
| Estimated Ap | 003 |
| Estimated international sunspot number | 017 - Based on 12 stations |
Noticeable events summary
| Day | Begin | Max | Fine | Loc | Strength | OP | 10cm | Catania/NOAA | Radio burst types | |
|---|---|---|---|---|---|---|---|---|---|---|
| Nessuna | ||||||||||
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
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Notizie sul meteo spaziale
| Ultimo brillamento X | 2026/03/30 | X1.5 |
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|---|---|
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