Viewing archive of Tuesday, 23 October 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Oct 23 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
23 Oct 2018	071	006
24 Oct 2018	070	006
25 Oct 2018	068	003

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 two days ago. 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 decreased from 375 and 325 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 5 nT. The Bz component fluctuated around 0 nT, ranging between -5 and +5 nT. The region of low latitude negative polarity patchy coronal hole that passed solar disk central meridian two days ago and may enhance solar wind speeds at Earth over the next couple of days. Geomagnetic conditions ranged between Kp index 1-2 (NOAA) and local K index 1-2 (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 17 stations.

Solar indices for 22 Oct 2018

Wolf number Catania	011
10cm solar flux	071
AK Chambon La Forêt	007
AK Wingst	007
Estimated Ap	006
Estimated international sunspot number	000 - Based on 35 stations

Noticeable events summary

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

All times in UTC

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