Viewing archive of Wednesday, 31 January 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Jan 31 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 31 Jan 2018 until 02 Feb 2018
Solar flares

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Solar protons

Quiet

10cm fluxAp
31 Jan 2018070014
01 Feb 2018072010
02 Feb 2018074007

Bulletin

Solar activity was low, no C-class flares in past 24 h. There is one new active region that emerged in the eastern hemisphere, it has beta magnetic field configuration and is not expected to produce significant flares in the coming hours.

Proton flux levels are at background values and are expected to remain so. No Earth-directed CMEs were observed.

Solar wind speed is at 375 km/s with interplanetary magnetic field magnitude of 7 nT. Geomagnetic conditions have been quiet. Isolated active periods are possible today, due to the probable arrival of moderately fast solar wind streams associated with a negative polarity diffuse equatorial coronal hole.

Today's estimated international sunspot number (ISN): 012, based on 05 stations.

Solar indices for 30 Jan 2018

Wolf number Catania011
10cm solar flux069
AK Chambon La Forêt004
AK Wingst003
Estimated Ap003
Estimated international sunspot number000 - Based on 25 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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