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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2019 Feb 03 1230 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Sluneční protony

Quiet

	10cm flux	Ap
03 Feb 2019	071	016
04 Feb 2019	072	010
05 Feb 2019	074	007

Bulletin

No flares in past 24 h. The region that rotated into view from the east limb has no sunspots, the Sun is spotless. Solar activity has been very low and is expected to remain so,

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 580 km/s with interplanetary magnetic fields of 3 nT. Geomagnetic conditions reached active values in the past 24 hours both locally at Dourbes (k = 4, from 16:00 UT to 18:00 UT, and from 22:00 UT to 00:00 UT) and at planetary levels (Kp = 4, from 15:00 UT to 18:00 UT and from 00:00 UT until 03:00 UT). The Earth is still inside the high speed stream from a negative polarity coronal hole. Mostly unsettled conditions expected, active periods remain likely to happen as the solar wind speed is still elevated (due to the extended and patchy shape of the coronal hole).

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

Solar indices for 02 Feb 2019

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	023
AK Wingst	///
Estimated Ap	019
Estimated international sunspot number	000 - Based on 15 stations

Noticeable events summary

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

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