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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2016 Oct 23 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
23 Oct 2016	078	014
24 Oct 2016	079	014
25 Oct 2016	079	011

Bulletin

Over the past 24 hours solar activity has been low. there were no significant flares and all Active Regions (AR) have shown low levels of activity. There was a small Coronal Mass Ejection (CME) produced by/near AR 2602 (Mcintosh class:Axx; Mag. type:Alpha) which is currently located on the West Solar limb, the CME is not expected to hit the Earth. No Earth directed CMEs have been detected. Solar protons have 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. The solar wind speed has been slowly increasing from 340 to 450 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 5 nT. The Bz component fluctuated around 0 nT, between -5 nT and +5 nT. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 0-3 (Dourbes) over the past 24 hours. A small coronal hole located at central latitudes is currently close to the West limb and the resultant High Speed Stream (HSS) and Co-rotating Interaction Region (CIR) has slightly enhanced solar wind speeds. A chance for slightly enhanced geomagnetic activity should persist throughout the day. A large positive polarity northern coronal hole extending to low latitudes is currently located near disk centre and will enhance solar activity next week.

Today's estimated international sunspot number (ISN): 017, based on 09 stations.

Solar indices for 22 Oct 2016

Wolf number Catania	///
10cm solar flux	078
AK Chambon La Forêt	///
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	028 - Based on 21 stations

Noticeable events summary

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

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