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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 May 16 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
16 May 2018	070	007
17 May 2018	070	016
18 May 2018	070	007

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 350 km /s with interplanetary magnetic field magnitude of 4 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 24 h and cause disturbed geomagnetic conditions (up to minor storm level).

Today's estimated international sunspot number (ISN): 000, based on 23 stations.

Solar indices for 15 May 2018

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	///
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	000 - Based on 26 stations

Noticeable events summary

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

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