Просмотр архива за среда, 29 ноября 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2017 Nov 29 1230 UTC

SIDC Forecast

Солнечные вспышки

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

Geomagnetism

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

Солнечные протоны

Quiet

	10cm flux	Ap
29 Nov 2017	072	010
30 Nov 2017	071	006
01 Dec 2017	070	005

Bulletin

Solar activity was at very low levels. Decaying sunspot region NOAA 2689 was quiet. The leading part of the prominent 40 degrees long filament has started to round the SW limb. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Quiet flaring conditions are expected, with a slight chance on an isolated C-class flare.

Solar wind speed undulated between 400 and 430 km/s, with Bz oscillating between -6 nT and +7 nT. The interplanetary magnetic field was mostly directed towards the Sun.

The geomagnetic field was quiet throughout the period. Mostly quiet to unsettled conditions are expected, with a possibility on an active episode if the glancing blow from the 25 November CME arrives or the wind stream of the negative polar coronal hole (CH) extension intensifies.

Today's estimated international sunspot number (ISN): 013, based on 10 stations.

Solar indices for 28 Nov 2017

Wolf number Catania	016
10cm solar flux	072
AK Chambon La Forêt	009
AK Wingst	007
Estimated Ap	007
Estimated international sunspot number	016 - Based on 27 stations

Noticeable events summary

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

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