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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Oct 16 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
16 Oct 2019	067	006
17 Oct 2019	067	007
18 Oct 2019	067	007

Bulletin

The Sun is spotless and did not produce any flares in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at only 1%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

Solar wind speed near Earth as registered by ACE varied between about 325 and 425 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF) changed from predominantly towards the Sun to predominantly away from the Sun at about 22h UT on October 15. The IMF magnitude varied between about 1 and 9 nT. Bz was never below -5 nT for extended periods.

Quiet geomagnetic conditions (K Dourbes between 1 and 2; NOAA Kp between 0 and 3) were registered in the past 24 hours. Quiet to unsettled geomagnetic levels (K Dourbes < 4) are expected on October 16, 17 and 18.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 15 Oct 2019

Wolf number Catania	000
10cm solar flux	067
AK Chambon La Forêt	009
AK Wingst	004
Estimated Ap	004
Estimated international sunspot number	000 - Based on 18 stations

Noticeable events summary

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

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