Visualizzazione archivio di mercoledì, 15 febbraio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Feb 15 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Protoni solari

Quiet

	10cm flux	Ap
15 Feb 2017	075	003
16 Feb 2017	075	005
17 Feb 2017	075	018

Bulletin

In the past 24 hours, no C flares were observed. Very low solar activity (no C flares) is expected in the next 24 hours. Solar wind speed measured by DSCOVR varied between about 295 and 320 km/s in the past 24 hours, while the magnitude of the Interplanetary Magnetic Field (IMF) varied between about 1 and 5 nT. Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 0 and 1) were registered in the past 24 hours. Quiet to unsettled levels (K Dourbes < 4) are expected on February 15 and 16. Due to the expected arrival of a high speed stream from a positive coronal hole, quiet to active geomagnetic conditions (K Dourbes < 5) are possible on February 17, with a slight chance for minor storm levels (K Dourbes = 5).

Today's estimated international sunspot number (ISN): 023, based on 19 stations.

Solar indices for 14 Feb 2017

Wolf number Catania	///
10cm solar flux	075
AK Chambon La Forêt	003
AK Wingst	001
Estimated Ap	001
Estimated international sunspot number	016 - Based on 30 stations

Noticeable events summary

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

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