Vaata neljapäev, 8 veebruar 2018 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2018 Feb 08 1253 UTC

SIDC Forecast

Valid from 1230 UTC, 08 Feb 2018 until 10 Feb 2018
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
08 Feb 2018077004
09 Feb 2018078006
10 Feb 2018077006

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 Catania022
10cm solar flux077
AK Chambon La Forêt005
AK Wingst002
Estimated Ap002
Estimated international sunspot number022 - Based on 27 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

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