Viewing archive of Tuesday, 12 February 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Feb 12 1230 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
12 Feb 2019	070	007
13 Feb 2019	069	015
14 Feb 2019	070	010

Bulletin

The solar activity has been quiet over the past 24 hours. The visible solar disc was spotless and the X-ray flux remained below B-class level. Quiet conditions are expected to continue over the next 24 hours.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. The greater than 10MeV proton flux remained at background levels over the past 24 hours and is expected to remain so.

The solar wind speed has fluctuated between 340 and 420 km/s over the past 24 hours. The total magnetic field strength fluctuated between 1.6 and 9.3 nT, where the Bz component fluctuated between -6.4 and +8 nT. Slightly enhanced solar wind conditions are expected over the next 24 hours due to the influence of the extended southern polar coronal hole, which crossed the central meridian on the 10th February.

The geomagnetic conditions have been unsettled with an isolated active period (observed by Dourbes) over the past 24 hours, with the Kp (NOAA) and the local K (Dourbes) indices ranging between 1-3 and 1-4, respectively. Over the next 24 hours the geomagnetic conditions are expected to be quiet to unsettled, with the possibility for isolated active periods as the influence of the enhanced solar wind speed from the extended southern polar coronal hole is expected begin to influence the Earth on the 13th February.

Today's estimated international sunspot number (ISN): 000, based on 14 stations.

Solar indices for 11 Feb 2019

Wolf number Catania	000
10cm solar flux	070
AK Chambon La Forêt	017
AK Wingst	///
Estimated Ap	009
Estimated international sunspot number	000 - Based on 26 stations

Noticeable events summary

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

All times in UTC

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