Viewing archive of Friday, 24 May 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 May 24 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
24 May 2019	066	005
25 May 2019	066	005
26 May 2019	067	003

Bulletin

Over the past 24 hours solar activity has been very low. The visible solar disc was spotless and no significant flares have been recorded. No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain very low over the next 24 hours.

The solar wind fluctuated between 320 km/s and 380 km/s over the last 24 hours. The total magnetic field strength fluctuated between 3.1 and 6.7 nT. The Bz component ranged between approximately -6 and +4 nT. The phi angle was predominantly in the negative sector.

Geomagnetic conditions have been quiet over the past 24 hours, with Kp index (NOAA) and local K index (Dourbes) both ranging between 1 and 2. Quiet geomagnetic conditions are expected over the next 24 hours, with the possibility of isolated unsettled periods due to the weak solar wind stream associated with a small negative polarity coronal hole, which traversed the central meridian on 21 May.

Today's estimated international sunspot number (ISN): 000, based on 24 stations.

Solar indices for 23 May 2019

Wolf number Catania	///
10cm solar flux	067
AK Chambon La Forêt	011
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	000 - Based on 29 stations

Noticeable events summary

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

All times in UTC

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