Prohlížíte si archiv pátek 15. září 2017

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2017 Sep 15 1230 UTC

SIDC Předpověď

Sluneční erupce

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

Geomagnetismus

Minor storm expected (A>=30 or K=5)

Sluneční protony

Quiet

	10cm tok	Ap
15 Sep 2017	074	032
16 Sep 2017	073	015
17 Sep 2017	073	009

Bulletin

The sunspot group Catania number 55 (NOAA AR 2680), is still the only reported sunspot group on the visible side of the solar disc. Solar activity was very low, with no even C-class flares reported in the past 24 hours. Isolated C-class flares are possible in the coming hours, but very improbable. The particle event, associated with the X8.2 flare has finished, the proton fluxes with >10 MeV went bellow the event threshold at about 18 UT on September 14. No Earth directed CMEs have been observed in the past 24 hours.

The Earth is presently inside the fast solar wind stream with the speed of about 660 km/s. The interplanetary magnetic field magnitude is about 6 nT. Arrival of the interaction region between the slow and the fast solar wind from a low-latitude extension of the northern polar coronal hole induced yesterday afternoon and early this morning moderate geomagnetic storm conditions: NOAA Kp = 6 (with local K = 5 at Dourbes). The interaction region was followed by the fast stream, with the solar wind speed reaching 770 km/s. Since the solar wind speed is still rather high, longer intervals of the negative value of the Bz component of interplanetary magnetic field might still induce active to minor storm conditions. Geomagnetic conditions are presently active, and we expect active to possibly minor storm level (Kp up to 5) conditions in the coming hours.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 013, na základě 24 stanic.

Solární indexy za 14 Sep 2017

Wolfovo číslo Catania	012
10cm sluneční tok	074
AK Chambon La Forêt	046
AK Wingst	029
Odhadovaný Ap	028
Odhadovaný mezinárodní počet slunečních skvrn	013 - Na základě 27 stanic

Souhrn významných událostí

Poskytuje Centrum pro analýzu dat o solárních vlivech© - SIDC - Zpracováno SpaceWeatherLive

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