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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2016 Aug 20 1337 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
20 Aug 2016	081	005
21 Aug 2016	079	005
22 Aug 2016	077	012

Bulletin

Solar activity was very low in the past 24 hours. A B4.4 flare was observed today 20-Aug-2016 coming from the active region AR NOAA 2578 (peaking at 06:00 UT). Two additional active regions are presently observed on the visible side of the solar disc. Their photospheric magnetic field configuration is simple (alpha configuration). There is a transequatorial coronal hole observed presently on the visible solar disc which may become geoeffective in 3-4 days. No Earth-directed CME has been observed. Solar proton flux intensity is expected to lie within the background levels. Solar activity is expected to be low with small probability for B-class flares. The variations of the solar wind parameters were weak. Solar wind speed remained below 400 km/s during the last 24 hours. The magnitude of the Interplanetary Magnetic Field (Bt) elevated till 8 nT this morning (20-Aug-2016) and then it smoothly decreased till 5 nT. The Bz component demonstrated one variation within the interval 7nT : -4 nT and afterwards remained neutral. Geomagnetic conditions have been very quiet in the past 24 hours (K Dourbes between 1 and 3; NOAA Kp between 1 and 2). Geomagnetic activity is expected to continue at very low levels today (20-08-2016) and tomorrow (21-08-2016). Active to minor geomagnetic storm conditions (K Dourbes = 3-4) are possible later as a possible response to the transequatorial negative polarity coronal hole.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 019, na základě 16 stanic.

Solární indexy za 19 Aug 2016

Wolfovo číslo Catania	///
10cm sluneční tok	081
AK Chambon La Forêt	012
AK Wingst	006
Odhadovaný Ap	005
Odhadovaný mezinárodní počet slunečních skvrn	050 - Na základě 23 stanic

Souhrn významných událostí

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

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