Viewing archive of Wednesday, 12 September 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Sep 12 1256 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
12 Sep 2018	068	006
13 Sep 2018	069	008
14 Sep 2018	069	008

Bulletin

Solar activity was very low. A new emerging active region NOAA AR 2722 (Bxo, Beta) has some potential to produce C-class 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 parameters variations decreased after the passage of the co- rotating intercation region. Solar wind speed decreased from about 590 to 530 km/s. The total interplanetary magnetic field is below 6 nT. Bz varied between -3 and +5 nT. Geomagnetic conditions gradually decreased from the moderate storm level yesterday till quiet conditons observed now. Geomagnetic conditions are expected to be mostly quiet from now.

Today's estimated international sunspot number (ISN): 014, based on 15 stations.

Solar indices for 11 Sep 2018

Wolf number Catania	016
10cm solar flux	069
AK Chambon La Forêt	035
AK Wingst	034
Estimated Ap	036
Estimated international sunspot number	015 - Based on 26 stations

Noticeable events summary

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

All times in UTC

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