Viewing archive of Thursday, 13 September 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Sep 13 1302 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
13 Sep 2018	070	018
14 Sep 2018	071	013
15 Sep 2018	070	012

Bulletin

Solar activity was very low. No flares, no earth-directed coronal mass ejections (CMEs) were observed. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low. Solar wind speed decreased from about 540 to 490 km/s. The total interplanetary magnetic field is below 6 nT. Bz varied between -6 and +5 nT. Quiet to active geomagnetic conditions were observed. Quiet to active geomagnetic conditions can be expected for the next two days.

Today's estimated international sunspot number (ISN): 000, based on 22 stations.

Solar indices for 12 Sep 2018

Wolf number Catania	013
10cm solar flux	070
AK Chambon La Forêt	026
AK Wingst	014
Estimated Ap	012
Estimated international sunspot number	014 - Based on 21 stations

Noticeable events summary

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

All times in UTC

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