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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2020 Feb 09 1231 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
09 Feb 2020	072	007
10 Feb 2020	072	008
11 Feb 2020	072	017

Bulletin

X-ray flux remained below B level throughout the period. The Sun is spotless and no flaring is expected.

No Earth-directed CMEs have been observed in coronagraph data.

The proton flux levels were at background values and expected to remain so. High energy electron fluxes are enhanced peaking above the event threshold. They are expected to remain elevated for the next few days in the wake of the decaying high speed Solar wind conditions.

Solar wind conditions continued to decline. Solar wind speed dropped from around 500 km/s to around 430 km/s. Total magnetic field was around 5nT with the magnetic field phi angle continuing to be in the negative sector. Solar wind conditions are expected to further return to a nominal regime over the next 24 hours with later a renewed enhancement expected late February 10, early February 11, in relation to a positive polarity coronal hole in the northern Solar hemisphere.

Geomagnetic conditions were quiet to unsettled (local K Dourbes 0-2 and NOAA Kp 1-3).

Today's estimated international sunspot number (ISN): 000, based on 11 stations.

Solar indices for 08 Feb 2020

Wolf number Catania	///
10cm solar flux	072
AK Chambon La Forêt	012
AK Wingst	007
Estimated Ap	006
Estimated international sunspot number	000 - Based on 19 stations

Noticeable events summary

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

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