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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2020 Apr 19 1231 UTC

SIDC Předpověď

Sluneční erupce

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

Geomagnetismus

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

Sluneční protony

Quiet

	10cm tok	Ap
19 Apr 2020	069	003
20 Apr 2020	069	013
21 Apr 2020	069	010

Bulletin

The Sun was spotless. Solar activity was at very low levels and is expected to remain so.

The greater than 10 MeV proton flux and the greater than 2 MeV electron flux were at nominal values and are expected to remain so. From 21 April onwards, the electron flux could become more enhanced following the arrival of a coronal hole wind stream.

No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery.

Solar wind speed was steady between 310 and 330 km/s (DSCOVR). Bz varied between -4 and +3 nT, being mostly at positive values. The direction of the interplanetary magnetic field (phi angle) was in a mostly sunward orientation (negative sector), except for a period between midnight and 07UT when it was in a positive orientation.

Geomagnetic activity was at quiet levels. Geomagnetic conditions are expected to be quiet to unsettled, with an active interval possible on 20 April in response to the expected wind stream associated with the extension of the negative polarity southern polar coronal hole.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 000, na základě 24 stanic.

Solární indexy za 18 Apr 2020

Wolfovo číslo Catania	///
10cm sluneční tok	070
AK Chambon La Forêt	005
AK Wingst	003
Odhadovaný Ap	003
Odhadovaný mezinárodní počet slunečních skvrn	000 - Na základě 30 stanic

Souhrn významných událostí

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

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