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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2017 Apr 16 1237 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
16 Apr 2017	073	010
17 Apr 2017	072	015
18 Apr 2017	071	007

Bulletin

Solar activity was at very low levels. No flares were observed during the reporting period. No Earth-directed CMEs were observed in available coronagraph imagery. Integral proton flux for protons with energies above 10 MeV remained at background level. Solar activity is expected to grow till B-class flaring level today (April 16) and till C-class flaring level from tomorrow (April 17) due to anticipated return of previously active regions to the visible solar disk.

Solar wind speed decreased from about 350 km/s to values around 315 km/s (05UT, 16 April), but then increased again till 350 km/s. The total interplanetary magnetic field (IMF) strength, as recorded by the DSCOVR satellite, was around 5 nT. Bz fluctuated between -4.5 and +4 nT. Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 1 and 2) were registered in the past 24 hours. Solar wind speed is expected to grow further today due to the arrival of high speed stream from the positive polarity coronal hole. In response geomagnetic conditions are likely to experience mostly quiet to unsettled conditions from late today (16 April) and tomorrow (17 April). Isolated episodes of active geomagnetic conditions are also possible.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 000, na základě 21 stanic.

Solární indexy za 15 Apr 2017

Wolfovo číslo Catania	///
10cm sluneční tok	073
AK Chambon La Forêt	008
AK Wingst	010
Odhadovaný Ap	008
Odhadovaný mezinárodní počet slunečních skvrn	000 - Na základě 20 stanic

Souhrn významných událostí

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

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