Prohlížíte si archiv úterý 25. února 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2020 Feb 25 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
25 Feb 2020	070	003
26 Feb 2020	070	008
27 Feb 2020	070	007

Bulletin

Solar activity was at very low levels. The Sun was 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 started the period around 390 km/s, reaching a peak near 420 km/s around 21UT, and ending the period with values around 350 km/s (ACE). Bz varied between -3 and +2 nT. The interplanetary magnetic field (phi angle) was 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 24 Feb 2020

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	006
AK Wingst	005
Estimated Ap	003
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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