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Daily bulletin on solar and geomagnetic activity from the SIDC
Emesso: 2013 Sep 25 1242 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 | |
|---|---|---|
| 25 Sep 2013 | 110 | 006 |
| 26 Sep 2013 | 110 | 005 |
| 27 Sep 2013 | 110 | 006 |
Bulletin
NOAA active region 1846/ Catania 79 produced a C1.1 flare on September 24. Although the chances for more C-flares are small, we end the all-quiet- alert. ACE data show now a clear coronal hole signature. The solar wind plasma has a speed just below 450 km/s. It took this plasma around 4 days to bridge the distance Sun-Earth. On September 20, a northern coronal hole passed the central meridian. The co-rotating interaction region (CIR) followed by a fast wind measured by ACE, is probably linked to this hole. The CIR was responsible for 1 interval of Kp=4 on September 24. We expect quiet geomagnetic conditions, with Kp below 3.
Today's estimated international sunspot number (ISN): 052, based on 19 stations.Solar indices for 24 Sep 2013
| Wolf number Catania | 073 |
| 10cm solar flux | 110 |
| AK Chambon La Forêt | 020 |
| AK Wingst | 012 |
| Estimated Ap | 011 |
| Estimated international sunspot number | 046 - 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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Notizie sul meteo spaziale
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