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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2020 Feb 03 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
03 Feb 2020	071	005
04 Feb 2020	071	007
05 Feb 2020	071	013

Bulletin

X-ray flux remained below B level throughout the period. The Sun is now 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 speed decreased from around 420 km/s to around 380 km/s. The total magnetic field was at nominal values around 5nT. The magnetic field phi angle fluctuated somewhat but was mostly in the negative sector. Solar wind conditions are expected to remain nominal until around noon February 5, when some weak effects of a high speed stream from the extension of the (negative polarity) Southern polar coronal hole, may enhance Solar wind speed.

Geomagnetic conditions were quiet to unsettled (local K Dourbes 0-2, NOAA Kp 0-3). Quiet geomagnetic conditions are expected over the next days, then by noon February 5 rising to unsettled conditions with some isolated active periods becoming possible.

Today's estimated international sunspot number (ISN): 000, based on 17 stations.

Solar indices for 02 Feb 2020

Wolf number Catania	///
10cm solar flux	072
AK Chambon La Forêt	013
AK Wingst	008
Estimated Ap	007
Estimated international sunspot number	000 - Based on 18 stations

Noticeable events summary

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

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