Viewing archive of Tuesday, 20 November 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Nov 20 1234 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
20 Nov 2018	072	016
21 Nov 2018	072	017
22 Nov 2018	072	017

Bulletin

Solar X-ray flux remained below B level. As NOAA region 2727 is in decay, chances for C-flares are further reduced and very low.

No Earth directed CMEs have been observed in coronagraph images.

Proton flux levels were at background values and are expected to remain so.

Solar wind went through a period of increased interplanetary magnetic field to just over 10nT which announced a period of rise in Solar wind velocity to currently close to 440 km/s. This is indicative of a mild influence from a high speed stream from the Southern negative polarity coronal holes. It remains to be seen if it's influence will set true more clearly. Slightly enhanced solar wind conditions are hence expected to continue.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 0-3, and local K Dourbes 1-3) and are expected to continue under the slightly enhanced Solar wind conditions.

Today's estimated international sunspot number (ISN): 000, based on 04 stations.

Solar indices for 19 Nov 2018

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	010
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	013 - Based on 09 stations

Noticeable events summary

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

All times in UTC

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