Visualizzazione archivio di mercoledì, 26 febbraio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2020 Feb 26 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
26 Feb 2020	070	006
27 Feb 2020	070	009
28 Feb 2020	070	007

Bulletin

Solar activity was at very low levels. The Sun remained spotless. No earth-directed coronal mass ejections (CMEs) have been observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values. Some small and patchy equatorial coronal holes (CHs) are present on the solar disk.

Solar activity is expected to remain at very low levels.

Solar wind conditions were at background levels. Solar wind speed varied slowly between 330 and 360 km/s (ACE). Bz was near 0 nT until about 02UT, when it started varying between -3 and +5 nT. The interplanetary magnetic field (phi angle) was mostly directed towards the Sun (negative sector). Geomagnetic conditions were at quiet levels.

Geomagnetic activity is expected to remain mostly at quiet levels. Isolated unsettled intervals are possible if the earth environment should encounter enhanced wind streams from currently present small and patchy coronal holes.

Today's estimated international sunspot number (ISN): 000, based on 14 stations.

Solar indices for 25 Feb 2020

Wolf number Catania	000
10cm solar flux	071
AK Chambon La Forêt	003
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	000 - Based on 20 stations

Noticeable events summary

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

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