Visualizzazione archivio di lunedì, 5 febbraio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 Feb 05 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
05 Feb 2018	073	010
06 Feb 2018	072	008
07 Feb 2018	073	007

Bulletin

Solar activity was low. There is one active region NOAA 2699 that appeared in the eastern hemisphere and produced many B-class flares and one C1.1 flare that peaked at 20:24 UT yesterday. Now, NOAA 2699 has alpha magnetic field configuration and is not expected to produce significant flares in the coming hours. Proton flux levels are at background values and are expected to remain so. No Earth-directed CMEs were observed. Solar wind speed is at 430 km/s now with interplanetary magnetic field magnitude of 5 nT. Geomagnetic conditions reached unsettled levels (K = 3) overnight due to the mild effect of the low latitude extension of the northern polar coronal hole (speeds reaching only 450 km/s and interplanetary magnetic field 9 nT). Quiet to unsettled conditions can be expected in the next 48 h.

Today's estimated international sunspot number (ISN): 015, based on 19 stations.

Solar indices for 04 Feb 2018

Wolf number Catania	///
10cm solar flux	073
AK Chambon La Forêt	010
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	000 - Based on 21 stations

Noticeable events summary

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

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