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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2019 Apr 20 1230 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
20 Apr 2019	070	005
21 Apr 2019	070	003
22 Apr 2019	070	003

Bulletin

Solar activity was at very low levels. While rounding the west limb, NOAA 2738 produced 4 B-class flares, the strongest being a B8 flare peaking at 00:50UT. The lone sunspot group currently visible on the solar disk, NOAA 2739, was quiet and is decaying. No earth-directed coronal mass ejections were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values. An equatorial negative polarity coronal hole (CH) is transiting the central meridian.

Solar activity is expected to remain at very low levels.

Solar wind speed was fairly steady between 300 and 350 km/s (DSCOVR). Bz varied between -4 and +6 nT. The interplanetary magnetic field was mostly directed away from the Sun (positive sector) until about 07:00UT, when it switched back to towards the Sun (negative sector). Geomagnetic conditions were at quiet levels, with an isolated unsettled interval (14-17UT) recorded at Dourbes.

Quiet geomagnetic conditions are expected to continue, with a chance on an unsettled interval.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 012, na základě 26 stanic.

Solární indexy za 19 Apr 2019

Wolfovo číslo Catania	///
10cm sluneční tok	073
AK Chambon La Forêt	009
AK Wingst	///
Odhadovaný Ap	005
Odhadovaný mezinárodní počet slunečních skvrn	024 - Na základě 28 stanic

Souhrn významných událostí

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

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