Viewing archive of Wednesday, 20 January 2021

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2021 Jan 20 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
20 Jan 2021	078	006
21 Jan 2021	076	006
22 Jan 2021	076	006

Bulletin

During last 24 hours the solar flaring activity slightly increased. Several B-class and an isolated C-class flares were reported, all originating from the NOAA AR 2797. The impulsive C1.0 flare peaked at 17:54 UT on January 19. Presently available coronagraph observations (there is a large data gap in observations) do not show signatures of the possibly associated CME. We expect such a level of flaring activity to persist in the coming hours. During last 24 hours no Earth directed CMEs were observed in coronagraph data, and proton flux levels remained at background values.

The solar wind speed is presently around 340 km/s and the interplanetary magnetic field magnitude is about 6 nT. The geomagnetic conditions are presently quiet and we expect quiet to unsettled geomagnetic conditions in the coming hours.

Today's estimated international sunspot number (ISN): 019, based on 13 stations.

Solar indices for 19 Jan 2021

Wolf number Catania	025
10cm solar flux	078
AK Chambon La Forêt	007
AK Wingst	///
Estimated Ap	006
Estimated international sunspot number	017 - Based on 16 stations

Noticeable events summary

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

All times in UTC

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