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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 Mar 04 1330 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
04 Mar 2018	067	007
05 Mar 2018	067	008
06 Mar 2018	066	007

Bulletin

Solar activity is very low with only one B-class flare reported during last 24 hours. Catania sunspot group 73 (NOAA AR 2007) has rotated behind the west solar limb and there are presently no numbered active regions on the visible side of the solar disc. We expect low solar activity to continue in the coming hours with very low probability of flaring, even on the B-class level. Coronagraph images do not show signatures of the Earth directed CMEs, and the solar protons remained at the background level.

The solar wind speed is presently about 370 km/s and the interplanetary magnetic field magnitude is 3 nT. The increase of the solar wind speed (up to 460 km/s), interplanetary magnetic field (up to 10 nT) and temperature, simultaneously with decrease of density observed during last 24 hours are probably associated with the equatorial coronal hole, which reached central meridian in the morning of February 26. 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): 000, based on 24 stations.

Solar indices for 03 Mar 2018

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	013
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	000 - Based on 24 stations

Noticeable events summary

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

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