Visualizzazione archivio di sabato, 8 febbraio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2020 Feb 08 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
08 Feb 2020	071	006
09 Feb 2020	071	007
10 Feb 2020	071	011

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 and expected to rise further due to the ongoing but decaying high speed Solar wind conditions.

Solar wind speed decayed from values around and over 600 km/s to below 500 km/s at the end of the period. The total magnetic field was mostly below 5nT with a variable Bz component. The phi angle remained in the negative sector throughout the period. Solar wind conditions are expected to show a slow and gradual return to nominal conditions over the next days. By late February 10, early February 11, we may see renewed enhancements related to the positive polarity coronal hole in the northern hemisphere.

Geomagnetic conditions were quiet to active (both NOAA Kp and local K Dourbes reached K=4 at midnight). Quiet to unsettled conditions are expected over the next 48 hours.

Today's estimated international sunspot number (ISN): 000, based on 13 stations.

Solar indices for 07 Feb 2020

Wolf number Catania	000
10cm solar flux	071
AK Chambon La Forêt	022
AK Wingst	016
Estimated Ap	016
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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