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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 Oct 22 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
22 Oct 2018	071	007
23 Oct 2018	072	008
24 Oct 2018	073	007

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. There are currently no significant Active Regions on the solar disk. A region of low-latitude negative polarity patchy coronal hole passed solar disk central meridian yesterday. 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. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares and a low probability of M-class flares. The solar wind speed has fluctuated between 350 and 400 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 5 nT and 10 nT. The Bz component fluctuated around 0 nT, ranging between -10 and +10 nT. The region of low-latitude negative polarity patchy coronal hole that passed the solar disk central meridian yesterday may enhance solar wind speeds at Earth over the next couple of days. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet to unsettled.

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

Solar indices for 21 Oct 2018

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	013
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	000 - Based on 24 stations

Noticeable events summary

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

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