Viewing archive of Wednesday, 7 February 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Feb 07 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 07 Feb 2018 until 09 Feb 2018
Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

10cm fluxAp
07 Feb 2018077003
08 Feb 2018078010
09 Feb 2018079006

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 flux077
AK Chambon La Forêt007
AK Wingst005
Estimated Ap004
Estimated international sunspot number017 - Based on 19 stations

Noticeable events summary

DayBeginMaxEndLocStrengthOP10cmCatania/NOAARadio burst types
None

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

All times in UTC

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