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Daily bulletin on solar and geomagnetic activity from the SIDC
Emesso: 2013 Aug 17 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 | |
|---|---|---|
| 17 Aug 2013 | 120 | 007 |
| 18 Aug 2013 | 120 | 007 |
| 19 Aug 2013 | 115 | 007 |
Bulletin
We expect solar activity to stay at eruptive levels with chances for C class flares from NOAA ARs 1817 and 1818 and a slight risk for an isolated M class flare. Geomagnetic conditions should be essentially quiet for the next 48 hours.
Today's estimated international sunspot number (ISN): 069, based on 12 stations.Solar indices for 16 Aug 2013
| Wolf number Catania | /// |
| 10cm solar flux | 120 |
| AK Chambon La Forêt | 026 |
| AK Wingst | 028 |
| Estimated Ap | 029 |
| Estimated international sunspot number | 066 - Based on 24 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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Ultime notizie
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Notizie sul meteo spaziale
| Ultimo brillamento X | 2026/02/04 | X4.21 |
| Ultimo brillamento M | 2026/02/25 | M2.4 |
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| Giorni senza macchie | |
|---|---|
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