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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Jan 17 1231 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
17 Jan 2019	070	015
18 Jan 2019	070	011
19 Jan 2019	071	007

Bulletin

Solar X-ray flux remained below B level throughout the period. The sunspots that emerged yesterday in the North-Western quadrant were short lived and the Solar disk is again spotless. X-ray flux is expected to continue to be below C level.

No earth directed CMEs have been recorded.

The proton flux levels were at background values and are expected to remain so.

Solar wind was mostly nominal, slowly increasing to around 400 km/s until after 11:00 UT when it rose more suddenly to close to 490 km/s. Total magnetic field was first within 4-7nT before increasing to close to 10nT between 8:00 and 10:00 UT. Bz saw a longer period period with values down to -7nT before midnight but has been positive recently. These slight enhancements may continue over the next days.

Geomagnetic conditions were quiet to unsettled (local K Dourbes and NOAA Kp 0-3). Quiet conditions are expected over the next days with initially some unsettled periods possible.

Today's estimated international sunspot number (ISN): 000, based on 15 stations.

Solar indices for 16 Jan 2019

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	013
AK Wingst	///
Estimated Ap	007
Estimated international sunspot number	000 - Based on 15 stations

Noticeable events summary

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

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