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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Jul 20 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
20 Jul 2019	067	008
21 Jul 2019	066	003
22 Jul 2019	067	006

Bulletin

Solar activity was at very low levels. The Sun remains spotless and no flares have been observed. No Earth directed coronal mass ejections (CME) were observed over the last 24 hours in the available coronagraph imagery. The greater than 10 MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain at very low levels.

The solar wind speed varied between 310 and 360 km/s (ACE). The Bz varied between -3 and +4 nT. The interplanetary magnetic field was predominantly directed towards the Sun (negative sector). Quiet to unsettled geomagnetic conditions were observed, with the Kp index (NOAA) ranging between 0-2 and the local K index (Dourbes) ranging between 0-3 over the past 24 hours.

Quiet geomagnetic conditions are expected to continue with possible isolated unsettled intervals due to the influence of a small negative polarity equatorial coronal hole which traversed the central meridian on July 16.

Today's estimated international sunspot number (ISN): 000, based on 15 stations.

Solar indices for 19 Jul 2019

Wolf number Catania	///
10cm solar flux	067
AK Chambon La Forêt	009
AK Wingst	005
Estimated Ap	003
Estimated international sunspot number	000 - Based on 27 stations

Noticeable events summary

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

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