Viewing archive of Sunday, 15 December 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Dec 15 1231 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
15 Dec 2019	070	005
16 Dec 2019	070	008
17 Dec 2019	069	009

Bulletin

The visible side of the solar disc is still spotless. There were no flares reported during last 24 hours and we do not expect flaring activity in the coming hours. No earth-directed coronal mass ejections (CMEs) were reported and the solar protons remained at the background level.

The in situ data indicate possible arrival of the solar wind from the negative polarity coronal hole (simultaneous increase of the interplanetary magnetic field magnitude and the solar wind speed) starting from about 22:00 UT on December 14. The maximum of the solar wind speed of 430 km/s was reached at 01:30 UT this morning. The solar wind speed is presently about 370 km/s and the interplanetary magnetic field magnitude is 6 nT. The geomagnetic conditions are quiet and we expect them to stay so in the coming hours.

Today's estimated international sunspot number (ISN): 000, based on 19 stations.

Solar indices for 14 Dec 2019

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	008
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	000 - Based on 31 stations

Noticeable events summary

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

All times in UTC

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