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Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2019 Feb 09 1234 UTC

SIDC Forecast

Солнечные вспышки

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

Geomagnetism

Quiet (A<20 and K<4)

Солнечные протоны

Quiet

	10cm flux	Ap
09 Feb 2019	071	013
10 Feb 2019	072	012
11 Feb 2019	071	007

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-level. Flaring conditions is expected to remain at low levels.

No Earth directed coronal mass ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The solar wind speed ranged between 420 and 495 km/s over the past 24 hours. The total interplanetary magnetic field strength reached about 7.5 nT, and the southward magnetic component fluctuated between -6 and 6.3 nT. The solar wind parameters are expected to continue to be enhanced due to the solar wind streams associated with the patchy coronal hole (of negative polarity) that reached the central meridian on Feb 4.

With the arrival of the streams associated with the coronal hole, active geomagnetic conditions were observed. The Kp index ranged between 1-4 (NOAA) and the local K index 1-3 (Dourbes). The conditions are expected to remain unsettled with possible short periods of active conditions.

Today's estimated international sunspot number (ISN): 000, based on 20 stations.

Solar indices for 08 Feb 2019

Wolf number Catania	000
10cm solar flux	071
AK Chambon La Forêt	018
AK Wingst	012
Estimated Ap	010
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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