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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Aug 29 1238 UTC

SIDC Forecast

Valid from 1230 UTC, 29 Aug 2017 until 31 Aug 2017
Brillamenti solari

C-class flares expected, (probability >=50%)

Geomagnetism

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

Protoni solari

Quiet

10cm fluxAp
29 Aug 2017083006
30 Aug 2017084005
31 Aug 2017085040

Bulletin

Over the past 24 hours, the solar activity remained at the low level. The magnetic configuration of Catania group 43 (NOAA region 2672) is still simplifying and has not produced any flare. A region listed as Catania group 47 is rotation from behind the East solar limb, and it shows some activity. It produced several narrow CMEs and one C3-class flare (peak-time at 0:3:00UT, August, 29). This will enhance the activity levels in the coming days.

No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery and the solar protons remains at background level.

The Earth is presently inside the slow solar wind with the speed below 400 km/s, the interplanetary magnetic field magnitude below 10 nT, and the Bz component being mainly negative around -5 nT. The fast solar wind associated with the coronal hole currently facing Earth is expected to arrive on August, 31 around noon UT time.

The geomagnetic conditions are presently very quiet with Kp (NOAA) and local K (Dourbes) indexes ranging between 1-2. The geomagnetic conditions are expected to remain low until August, 31 when the fast solar will reach Earth.

Today's estimated international sunspot number (ISN): 035, based on 25 stations.

Solar indices for 28 Aug 2017

Wolf number Catania025
10cm solar flux082
AK Chambon La Forêt005
AK Wingst003
Estimated Ap002
Estimated international sunspot number020 - Based on 34 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

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

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