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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2020 Oct 17 1231 UTC

SIDC Předpověď

Sluneční erupce

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

Geomagnetismus

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm tok	Ap
17 Oct 2020	075	006
18 Oct 2020	074	005
19 Oct 2020	074	006

Bulletin

During last 24 hours Catania sunspot group 44 (NOAA AR region 2775), situated at that moment at the West solar limb, was a source of two impulsive C-class flares and number of low B-class flares. The Catania sunspot group 45 (NOAA AR region 2776) was source of only few B-class flares, during last 24 hours. As this sunspot groups still has beta configuration of its photospheric magnetic field, it could be the source of the B-class flares and possibly, but not very probably also isolated C-class flares in the coming hours. The C-class flares originating from the Catania sunspot group 44 were associated with CMEs (projected speeds reported by CACTUS software were about 600 km/s). Since both CMEs were rather narrow and originated from the region on, and partially behind the West solar limb, we do not expected them to arrive to Earth. During the last 24 hours the proton flux levels remain at the background values.

The solar wind speed is presently about 330 km/s. The interplanetary magnetic field magnitude is fluctuating between 3 and 9 nT, and its present value is about 8 nT. The geomagnetic conditions are quiet, and we expect quiet to possibly unsettled geomagnetic conditions in the coming hours.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 012, na základě 11 stanic.

Solární indexy za 16 Oct 2020

Wolfovo číslo Catania	014
10cm sluneční tok	075
AK Chambon La Forêt	007
AK Wingst	006
Odhadovaný Ap	004
Odhadovaný mezinárodní počet slunečních skvrn	012 - Na základě 23 stanic

Souhrn významných událostí

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

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