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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2015 May 17 1231 UTC

SIDC Předpověď

Sluneční erupce

Eruptive (C-class flares expected, probability >=50%)

Geomagnetismus

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

Sluneční protony

Quiet

	10cm tok	Ap
17 May 2015	126	013
18 May 2015	122	021
19 May 2015	118	010

Bulletin

No C-class flares were observed. NOAA 2339 is quietly rounding the west limb. The 5 other sunspot regions are small and magnetically simple. Various filament eruptions were observed, most notably a filament east of NOAA 2348 that erupted around 07:00UT. Based on currently available coronagraphic imagery, none of the related coronal mass ejections (CMEs) had an earth-directed component.

There's still a chance for an isolated C-class flare.

Solar wind speed decreased further from about 430 km/s and is currently ranging between 360 and 400 km/s. Bz varied between -4 and +5 nT. A sector boundary crossing was observed at 04:10-04:20UT, with the direction of the interplanetary magnetic field abruptly turning from toward to away from the Sun. Quiet to unsettled geomagnetic conditions were observed.

The arrival of the 13 May CME and the high speed stream from the recurrent positive polarity coronal hole are expected for later today or 18 May. This may result in active conditions, with a possibility on a minor storming episode.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 059, na základě 17 stanic.

Solární indexy za 16 May 2015

Wolfovo číslo Catania	///
10cm sluneční tok	131
AK Chambon La Forêt	009
AK Wingst	006
Odhadovaný Ap	005
Odhadovaný mezinárodní počet slunečních skvrn	071 - Na základě 18 stanic

Souhrn významných událostí

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

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