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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2019 Nov 17 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
17 Nov 2019	070	007
18 Nov 2019	070	007
19 Nov 2019	070	007

Bulletin

The solar activity has been at very low levels over the past 24 hours. The Sun is currently spotless and the X-ray flux remains below B-level. Solar activity is expected to remain at low levels for the next 24 hours.

No earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

The expected enhancements in the solar environment due to the influence of the coronal hole (which has reached the central meridian on Nov 13) has arrived yesterday on Nov 16 around 17:00 UTC. The total magnetic field reached 9.5 nT at 18:00 UTC, the solar wind speed raised up to 450 km/s, and the southern component of the magnetic filed fluctuated between -7.7 nT and 9.2 nT. The enhanced solar wind conditions are expected to persist as long as the Earth remains under the influence of the coronal hole effects.

While quiet geomagnetic conditions were observed with Kp-index (NOAA), quiet to unsettle conditions were observed with the local station in Dourbes (K-Dourbes = 3) in response to the solar wind enhancement. More active conditions is not excluded, especially with the slow increase of the solar wind speed and possibly longer period of southward directed Bz component.

Today's estimated international sunspot number (ISN): 000, based on 12 stations.

Solar indices for 16 Nov 2019

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	011
AK Wingst	007
Estimated Ap	006
Estimated international sunspot number	000 - Based on 18 stations

Noticeable events summary

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

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