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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 May 22 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
22 May 2015	101	007
23 May 2015	100	007
24 May 2015	099	007

Bulletin

The past 24-hour solar activity was low. The most noteworthy event was a back-sided halo CME first seen by SOHO/LASCO at May 21, 22:24. All numbered active regions on the disc have stable magnetic configurations and are therefore not expected to yield significant flaring. Attention must be paid however to, yet unnumbered, flux emergence regions near N10W15. Geomagnetic conditions have been quiet in the past 24 hours and are expected to remain so. The solar wind is stable at 400km/s, no CME or coronal hole influence is expected in the coming days.

Today's estimated international sunspot number (ISN): 050, based on 12 stations.

Solar indices for 21 May 2015

Wolf number Catania	///
10cm solar flux	102
AK Chambon La Forêt	008
AK Wingst	003
Estimated Ap	002
Estimated international sunspot number	037 - Based on 29 stations

Noticeable events summary

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

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