Prohlížíte si archiv středa 21. února 2018

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2018 Feb 21 1230 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
21 Feb 2018	068	008
22 Feb 2018	068	019
23 Feb 2018	068	015

Bulletin

There are no sunspot regions on the visible hemisphere of the Sun and flaring level is very low. The chance for a C flare in the next 24 hours is estimated at 5%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

The solar wind density (recorded by DSCOVR) started rising at 03:50 UT on February 21, followed by a rise in the magnitude of the Interplanetary Magnetic Field (IMF) from 2 to 9 nT at 05:20 UT. The solar wind speed increased from about 350 to 400 km/s at 07:25 UT. These signs are indicative of a Co-rotating Interaction Region (CIR) leading a High Speed Stream (HSS) associated with the negative polarity southern polar coronal hole that passed the central meridian a couple of days ago. The IMF was mainly directed towards the Sun and Bz was below -5 nT most of the time between 07:30 and 08:30 UT. The solar wind speed is expected to be enhanced on February 21, 22 and 23, with speeds probably exceeding 500 km/s.

Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 0 and 1) were registered in the past 24 hours. Quiet to active levels (K Dourbes < 5) are expected on February 21, 22 and 23, with a slight chance for minor storm conditions (K Dourbes = 5).

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 000, na základě 22 stanic.

Solární indexy za 20 Feb 2018

Wolfovo číslo Catania	000
10cm sluneční tok	068
AK Chambon La Forêt	006
AK Wingst	005
Odhadovaný Ap	005
Odhadovaný mezinárodní počet slunečních skvrn	000 - Na základě 22 stanic

Souhrn významných událostí

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

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