Перегляд архіву субота, 30 листопада 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2019 Nov 30 1230 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
30 Nov 2019	070	005
01 Dec 2019	070	004
02 Dec 2019	070	003

Bulletin

Solar activity was at very low levels. The visible solar disk 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.

Solar activity is expected to remain at very low levels.

Solar wind speed gradually increased from initial values around 360 km/s to near 400 km/s at the end of the period (ACE). The interplanetary magnetic field (phi angle) was predominantly directed towards the Sun (negative sector). Bz varied between -6 and +5 nT, with a sustained negative stretch near -5 nT between 19-22UT that resulted in unsettled to active geomagnetic conditions during the 21-24UT interval (Kp = 3; K Dourbes = 4). For the remainder of the period, geomagnetic activity was mostly at quiet levels.

Geomagnetic activity is expected to remain at mostly quiet levels, an unsettled interval not excluded.

Today's estimated international sunspot number (ISN): 000, based on 28 stations.

Solar indices for 29 Nov 2019

Wolf number Catania	000
10cm solar flux	070
AK Chambon La Forêt	011
AK Wingst	007
Estimated Ap	005
Estimated international sunspot number	000 - Based on 24 stations

Noticeable events summary

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

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