Prohlížíte si archiv čtvrtek 28. listopadu 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2019 Nov 28 1230 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
28 Nov 2019	071	005
29 Nov 2019	071	005
30 Nov 2019	070	003

Bulletin

Solar activity was at very low levels. The Sun was spotless once again. 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.

Solar activity is expected to remain at very low levels.

Solar wind speed evolved in a generally declining trend, from about 400 km/s at the beginning to 330 km/s at the end of the period (ACE). Bz varied between -4 and +3 nT. Solar wind parameters reflected a Sector Boundary Crossing (SBC) around 05:30UTC, with the direction of the interplanetary magnetic field (phi angle) switching from mostly directed away from the Sun (positive sector) to predominantly towards the Sun (negative sector). Geomagnetic activity was at quiet levels (both Kp and K Dourbes).

Geomagnetic activity is expected to remain at quiet levels, with a chance on an unsettled interval.

Today's estimated international sunspot number (ISN): 000, based on 06 stations.

Solar indices for 27 Nov 2019

Wolf number Catania	///
10cm solar flux	072
AK Chambon La Forêt	010
AK Wingst	///
Estimated Ap	007
Estimated international sunspot number	000 - Based on 07 stations

Noticeable events summary

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

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