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Daily bulletin on solar and geomagnetic activity from the SIDC
Emesso: 2013 Apr 07 1203 UTC
SIDC Forecast
Brillamenti solari
Eruptive (C-class flares expected, probability >= 50%)
Geomagnetism
Quiet (A<20 and K<4)
Protoni solari
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 07 Apr 2013 | 141 | 004 |
| 08 Apr 2013 | 142 | 007 |
| 09 Apr 2013 | 140 | 007 |
Bulletin
Solar activity has been eruptive during the past 24 hours, with seven low C flares. More C flares are expected within the next 48 hours, with a chance for an M flare. Geomagnetic activity was at quiet levels (NOAA Kp = 1) during the past 24 hours. Quiet (K Dourbes < 4) conditions are predicted for April 7 to 9.
Today's estimated international sunspot number (ISN): 080, based on 12 stations.
Solar indices for 6 Apr 2013
| Wolf number Catania | /// |
| 10cm solar flux | 137 |
| AK Chambon La Forêt | 010 |
| AK Wingst | 006 |
| Estimated Ap | 004 |
| Estimated international sunspot number | 075 - Based on 18 stations |
Noticeable events summary
| Day | Begin | Max | Fine | Loc | Strength | OP | 10cm | Radio burst types | Catania/NOAA | |
|---|---|---|---|---|---|---|---|---|---|---|
| Nessuna | ||||||||||
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
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Notizie sul meteo spaziale
| Ultimo brillamento X | 2025/12/08 | X1.1 |
| Ultimo brillamento M | 2025/12/21 | M1.3 |
| Ultima tempesta geomagnetica | 2025/12/21 | Kp5 (G1) |
| Giorni senza macchie | |
|---|---|
| Ultimo giorno senza macchie | 2022/06/08 |
| Media mensile Numero di Macchie Solari | |
|---|---|
| novembre 2025 | 91.8 -22.8 |
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| Ultimi 30 giorni | 109 +22.2 |