Viewing archive of Tuesday, 19 January 2021

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2021 Jan 19 1234 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
19 Jan 2021	074	009
20 Jan 2021	075	009
21 Jan 2021	074	008

Bulletin

Solar flaring activity remains low, with only isolated B-class flares reported. All the flaring activity originates from the NOAA AR 2797, the only numbered sunspot group presently observed on the visible side of the solar disc. We expect a low level of flaring activity to persist in the coming hours with occasional B-class flares. The isolated C-class flares are possible, but not very probable. 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 320 km/s and it is slowly increasing. This increase might be due to the possible arrival of solar wind associated with the low latitude extension of the southern polar coronal hole. The interplanetary magnetic field magnitude is about 5 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): 017, based on 09 stations.

Solar indices for 18 Jan 2021

Wolf number Catania	///
10cm solar flux	075
AK Chambon La Forêt	009
AK Wingst	///
Estimated Ap	004
Estimated international sunspot number	012 - Based on 20 stations

Noticeable events summary

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

All times in UTC

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