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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Jan 22 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
22 Jan 2019	070	007
23 Jan 2019	071	015
24 Jan 2019	071	010

Bulletin

During last 24 hours there were no C-class flares reported. New and still not numbered active region, which started to emerged yesterday morning, became more complex and it was source of A-class flares and one B-class flare this morning. We expect such a low flaring activity to persist in the coming hours. Isolated low C-class flares are possible but not very probable. There were no Earth directed CMEs reported during last 24 hours and the solar protons remained at the background level.

The Earth is still inside the slow solar wind with the speed of about 310 km. The interplanetary magnetic field magnitude is presently about 4 nT. The geomagnetic conditions are quiet and we expect them to remain so in the coming hours. The unsettled to active geomagnetic conditions can be expected starting from the late evening today, due to expected arrival of the fast solar wind from the extended positive polarity equatorial coronal hole which reached central meridian in the morning of January 19.

Today's estimated international sunspot number (ISN): 017, based on 15 stations.

Solar indices for 21 Jan 2019

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	006
AK Wingst	004
Estimated Ap	002
Estimated international sunspot number	000 - Based on 18 stations

Noticeable events summary

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

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