Prohlížíte si archiv středa 7. února 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2018 Feb 07 1230 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
07 Feb 2018	077	003
08 Feb 2018	078	010
09 Feb 2018	079	006

Bulletin

Solar activity was low. NOAA AR 2699 produced many B-class flares and one C1.0 flare that peaked at 18:58 UT yesterday. Now NOAA 2699 has beta magnetic field configuration and is expected to produce more B-class flares and, with some chance, C-class flares. Proton flux levels are at background values and are expected to remain so. No Earth-directed CMEs were observed. Solar wind parameters were still under the influence of a low latitude extension of the northern polar coronal hole. Solar wind speed was between 400-460 km/s with interplanetary magnetic field magnitude ranged from 2 to 6 nT. Geomagnetic conditions have been mostly quiet reaching unsettled levels (K = 3) overnight, as measured locally at Dourbes. Geomagnetic conditions are expected to remain quiet today. Isolated episodes of unsettled levels are possible from tomorrow due to the better connection to a low latitude extension of the northern polar coronal hole.

Today's estimated international sunspot number (ISN): 022, based on 19 stations.

Solar indices for 06 Feb 2018

Wolf number Catania	///
10cm solar flux	077
AK Chambon La Forêt	007
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	017 - Based on 19 stations

Noticeable events summary

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

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