Viewing archive of Wednesday, 24 January 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Jan 24 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 24 Jan 2018 until 26 Jan 2018
Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

10cm fluxAp
24 Jan 2018070003
25 Jan 2018069003
26 Jan 2018069005

Bulletin

Solar activity was at very low levels. The Sun is spotless. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Solar activity is expected to remain at very low levels.

Solar wind speed decreased from an initial 470 km/s to current values near 350 km/s (DSCOVR). Bz varied between -3 and +3 nT. The interplanetary magnetic field was directed towards the Sun until about 02UT, after which is was mainly directed away from the Sun. A diffuse extension of the northern polar coronal hole (CH) is transiting the central meridian.

The geomagnetic field was mostly at quiet levels and is expected to remain so, with a chance on an unsettled episode.

Today's estimated international sunspot number (ISN): 000, based on 07 stations.

Solar indices for 23 Jan 2018

Wolf number Catania000
10cm solar flux071
AK Chambon La Forêt005
AK Wingst004
Estimated Ap004
Estimated international sunspot number000 - Based on 22 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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