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Daily bulletin on solar and geomagnetic activity from the SIDC
Emesso: 2013 Nov 18 1141 UTC
SIDC Forecast
Brillamenti solari
Active (M-class flares expected, probability >=50%)
Geomagnetism
Quiet (A<20 and K<4)
Protoni solari
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 18 Nov 2013 | 168 | 007 |
| 19 Nov 2013 | 164 | 007 |
| 20 Nov 2013 | 162 | 007 |
Bulletin
The risk for an isolated M class flare still exists from NOAA ARs 1893 and 1897, but C flares are more likely to occur in the coming 48 hours, from these regions and ARs 1899 and 1900. The past 24 hours were rather low in terms of flaring activity, with only moderate C class flares. We expect quiet geomagnetic conditions to prevail for the next 48 hours. Current interplanetary conditions are quiet.
Today's estimated international sunspot number (ISN): 112, based on 03 stations.Solar indices for 17 Nov 2013
| Wolf number Catania | /// |
| 10cm solar flux | 177 |
| AK Chambon La Forêt | 009 |
| AK Wingst | 006 |
| Estimated Ap | 006 |
| Estimated international sunspot number | 123 - Based on 11 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 | X1.4 |
| Ultimo brillamento M | 2026/03/28 | M1.3 |
| Ultima tempesta geomagnetica | 2026/03/25 | Kp5+ (G1) |
| Giorni senza macchie | |
|---|---|
| Ultimi 365 giorni | 3 giorni |
| 2026 | 3 giorni (3%) |
| Ultimo giorno senza macchie | 2026/02/24 |
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|---|---|
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| Ultimi 30 giorni | 86.6 +13 |