Перегляд архіву вівторок, 26 листопада 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2019 Nov 26 1231 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Сонячні протони

Quiet

	10cm flux	Ap
26 Nov 2019	070	005
27 Nov 2019	071	015
28 Nov 2019	070	008

Bulletin

Solar activity was at very low levels. The Sun was spotless. STEREO-A/EUVI images indicate a small active region developing just behind the east limb (as seen from Earth). 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 undulated between 470 and 370 km/s, showing a gradual decline and ending the period with values near 380 km/s (ACE). Bz varied between -3 and + 3 nT. The interplanetary magnetic field (phi angle) was mostly directed away from the Sun (positive sector). Kp and K Dourbes recorded quiet geomagnetic conditions, with a single unsettled episode by K Dourbes during the 21-24UT interval.

Geomagnetic activity is expected to remain mostly at quiet to unsettled levels. The earth environment is expected to become affected by the wind stream from a negative polarity coronal hole later today or tomorrow, increasing the possibility on an active episode.

Today's estimated international sunspot number (ISN): 000, based on 10 stations.

Solar indices for 25 Nov 2019

Wolf number Catania	000
10cm solar flux	070
AK Chambon La Forêt	011
AK Wingst	006
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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