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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Oct 23 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Minor storm expected (A>=30 or K=5)

Protoni solari

Quiet

	10cm flux	Ap
23 Oct 2019	066	005
24 Oct 2019	066	047
25 Oct 2019	066	028

Bulletin

Solar X ray flux remained below B level throughout the period. There are no active regions on disk and X-ray flux is expected to remain at background levels.

The filament eruption reported yesterday did not have any noticeable CME associated. No Earth-directed CME's were detected in coronagraph images.

Solar high energy proton fluxes were at background levels and are expected to remain so.

Solar wind conditions were nominal, with Solar wind speed around 350 km/s throughout the period and total magnetic field under 5nT. The magnetic field phi angle was in the negative sector. Solar wind is expected to increase significantly by tomorrow noon October 24 due to the recurrent high speed stream from an equatorial positive polarity coronal hole.

Geomagnetic conditions were quiet (NOAA Kp 0-1 and local K Dourbes 0-2). Geomagnetic conditions are expected to reach active levels with periods of minor geomagentic storming associated to the expected high speed stream. There is a chance that moderate storm levels (K=6) be reached.

Today's estimated international sunspot number (ISN): 000, based on 17 stations.

Solar indices for 22 Oct 2019

Wolf number Catania	///
10cm solar flux	066
AK Chambon La Forêt	006
AK Wingst	003
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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