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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Apr 29 1230 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
29 Apr 2017	078	006
30 Apr 2017	076	008
01 May 2017	075	006

Bulletin

The only reported flare, during last 24 hours, was B1.3 flare (peaked at 17:12 UT on April 28) which originated from the Catania sunspot group 18 (NOAA AR 2653). We expect solar activity to remain on the same level, with only occasional low B-class flares. No Earth directed CMEs have been observed and the solar protons remained at background level in the past 24 hours. The solar wind speed is presently about 400 km/s and the interplanetary magnetic field magnitude is 5nT. The geomagnetic conditions are presently quiet and we expect them to remain so in the coming hours.

Today's estimated international sunspot number (ISN): 034, based on 23 stations.

Solar indices for 28 Apr 2017

Wolf number Catania	///
10cm solar flux	078
AK Chambon La Forêt	014
AK Wingst	007
Estimated Ap	006
Estimated international sunspot number	036 - Based on 21 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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