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Daily bulletin on solar and geomagnetic activity from the SIDC

Emitido: 2016 Feb 21 1236 UTC

SIDC Forecast

Llamarada solar

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

Geomagnetism

Quiet (A<20 and K<4)

Protones solares

Quiet

	10cm flux	Ap
21 Feb 2016	102	006
22 Feb 2016	104	007
23 Feb 2016	104	007

Bulletin

In the past 24 hours, no C flares were observed. Quiet conditions are expected within the next 24 hours, with a probability of 45% for a C flare and 10% for an M flare. In the past 24 hours, the solar wind speed measured by ACE gradually decreased from about 470 km/s to 340 km/s. The magnitude of the Interplanetary Magnetic Field ranged between 1 and 5 nT. Over the past 24 hours, quiet geomagnetic levels were registered (K Dourbes between 1 and 2; NOAA Kp between 1 and 2). Quiet to unsettled levels (K Dourbes < 4) are expected on February 21, 22, and 23.

Today's estimated international sunspot number (ISN): 046, based on 10 stations.

Solar indices for 20 Feb 2016

Wolf number Catania	///
10cm solar flux	100
AK Chambon La Forêt	009
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	054 - Based on 12 stations

Noticeable events summary

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

All times in UTC

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