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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 May 15 1230 UTC

SIDC Forecast

Brillamenti solari

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Active conditions expected (A>=20 or K=4)

Protoni solari

Quiet

	10cm flux	Ap
15 May 2018	070	007
16 May 2018	070	007
17 May 2018	069	016

Bulletin

No active regions on the visible solar disc. No C-class flares in past 24 h and the situation is not expected to change.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 h.

The solar wind speed at L1 is at 390 km /s with interplanetary magnetic field magnitude of 5 nT. Geomagnetic conditions are quiet, the high speed solar wind from a negative polarity coronal hole located in the southern hemisphere is expected to arrive to the Earth in about 48 h and cause disturbed geomagnetic conditions.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 14 May 2018

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	007
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	000 - Based on 30 stations

Noticeable events summary

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

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