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Daily bulletin on solar and geomagnetic activity from the SIDC
Emesso: 2013 Apr 24 1147 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 | |
|---|---|---|
| 24 Apr 2013 | 121 | 022 |
| 25 Apr 2013 | 124 | 017 |
| 26 Apr 2013 | 126 | 007 |
Bulletin
Enhanced geomagnetic conditions are imminent as a result from a high speed solar wind outflow from a recurrent coronal hole in the Southern solar hemisphere. Meanwhile, the flaring potential of NOAA active region 1726 is decreasing, yet major C-flares are still possible.
Today's estimated international sunspot number (ISN): 062, based on 20 stations.Solar indices for 23 Apr 2013
| Wolf number Catania | /// |
| 10cm solar flux | 118 |
| AK Chambon La Forêt | 016 |
| AK Wingst | 008 |
| Estimated Ap | 007 |
| Estimated international sunspot number | 054 - Based on 20 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 | 2026/02/04 | X4.3 |
| Ultimo brillamento M | 2026/02/05 | M1.1 |
| Ultima tempesta geomagnetica | 2026/02/05 | Kp5+ (G1) |
| Giorni senza macchie | |
|---|---|
| Ultimo giorno senza macchie | 2022/06/08 |
| Media mensile Numero di Macchie Solari | |
|---|---|
| gennaio 2026 | 112.6 -11.4 |
| febbraio 2026 | 139.3 +26.7 |
| Ultimi 30 giorni | 124.9 +18 |