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Daily bulletin on solar and geomagnetic activity from the SIDC
Emesso: 2013 May 07 1246 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 May 2013 | 127 | 012 |
| 08 May 2013 | 125 | 010 |
| 09 May 2013 | 125 | 007 |
Bulletin
Solar activity has been eruptive during the past 24 hours, featuring three C flares from NOAA AR 11731, 11734 and new region 11736. More C-level flares are expected within the next 48 hours, with a slight chance for an M flare. In the last 24 hours, the IMF has decreased from 14 to 6 nT, probably due to the influence of a coronal hole high speed stream. Solar wind speeds have ranged between about 460 and 540 km/s, and currently lie around 520 km/s. Bz has been mainly positive, hence geomagnetic activity has been at quiet levels (K Dourbes between 2 and 3; NOAA Kp between 2 and 3) during the past 24 hours. Quiet geomagnetic conditions (K Dourbes < 4) are expected for May 7 to 9.
Today's estimated international sunspot number (ISN): 078, based on 16 stations.Solar indices for 06 May 2013
| Wolf number Catania | /// |
| 10cm solar flux | 131 |
| AK Chambon La Forêt | 015 |
| AK Wingst | 012 |
| Estimated Ap | 010 |
| Estimated international sunspot number | 078 - Based on 23 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
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