Prohlížíte si archiv čtvrtek 8. února 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2018 Feb 08 1253 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
08 Feb 2018	077	004
09 Feb 2018	078	006
10 Feb 2018	077	006

Bulletin

Solar activity slightly increased during the period. Two C-class flares were recorded: a C8.1 flare peaking at the beginning of the period (13:47 UT), and then a C1.7 event peaking at 14:39 UT. Both flares originated from NOAA 2699 active region, which developed it's magnetic configuration from beta to beta-gamma. Proton flux levels are at background values and are expected to remain so. No Earth-directed CMEs were observed. C-class flaring remains possible, with a small chance on an isolated M-class flare. Solar wind speed decreased from 425 km/s till at 390 km/s during the period. Interplanetary magnetic field magnitude is below 5 nT. Geomagnetic conditions have been very quiet. A low latitude extension of the northern polar coronal hole has still a slight chance to affect geomagnetic environment in the next 48hrs, unsettled conditions can be expected then.

Today's estimated international sunspot number (ISN): 024, based on 13 stations.

Solar indices for 07 Feb 2018

Wolf number Catania	022
10cm solar flux	077
AK Chambon La Forêt	005
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	022 - Based on 27 stations

Noticeable events summary

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

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