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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2016 Sep 10 1230 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

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

Sluneční protony

Quiet

	10cm flux	Ap
10 Sep 2016	093	006
11 Sep 2016	092	013
12 Sep 2016	091	011

Bulletin

NOAA 2585 still has a small magnetic delta and produced the strongest event of the period, a B5.3 flare peaking at 08:23UT. Gradually developing active region NOAA 2589 shows some magnetic mixing, and produced a B3 flare. No earth-directed coronal mass ejections (CME) have been observed.

A C-class flare is possible, with a small chance on an isolated M-class event.

Solar wind parameters were at nominal values, with wind speed steady near 410 km/s and Bz fluctuating between -4 and +4 nT. The interplanetary magnetic field (IMF) was mostly directed away from the Sun (positive). Geomagnetic activity was at quiet levels.

Mostly quiet geomagnetic conditions are expected. There's a small chance that a high speed stream from a polar coronal hole extension may influence the earth environment from 11 September onwards, increasing the likelihood on an active geomagnetic episode.

Today's estimated international sunspot number (ISN): 082, based on 15 stations.

Solar indices for 09 Sep 2016

Wolf number Catania	///
10cm solar flux	091
AK Chambon La Forêt	007
AK Wingst	004
Estimated Ap	004
Estimated international sunspot number	078 - Based on 29 stations

Noticeable events summary

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

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