Visualizzazione archivio di mercoledì, 5 febbraio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2020 Feb 05 1231 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Protoni solari

Quiet

	10cm flux	Ap
05 Feb 2020	070	009
06 Feb 2020	070	019
07 Feb 2020	070	007

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.

Solar wind conditions were near nominal with a slight increase in Solar wind speed from 350 km/s to around 370 km/s. total magnetic field was near a nominal 5nT, with a variable Bz and the magnetic field phi angle mainly in the negative sector. Solar wind conditions are expected to become slightly enhanced later today or by tomorrow morning due to the fast flow from the extension of the South polar coronal hole.

Geomagnetic conditions were quiet (both local K Dourbes and NOAA Kp 0-2). Unsettled to active conditions are expected over the next 24-48 hours.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 04 Feb 2020

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	011
AK Wingst	008
Estimated Ap	006
Estimated international sunspot number	000 - Based on 21 stations

Noticeable events summary

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

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