Prohlížíte si archiv středa 28. srpna 2019

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2019 Aug 28 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
28 Aug 2019	066	010
29 Aug 2019	066	009
30 Aug 2019	066	008

Bulletin

The solar activity has been quiet over the past 24 hours. The Sun is currently spotless and the X-ray flux remained below B-level. Solar activity is expected to remain at low levels for the next 24 hours.

No Earth-directed coronal mass ejections (CME) were observed over the past 24 hours in the available coronagraph imagery. The greater than 10 MeV proton flux remained at background levels over the past 24 hours and is expected to remain at low levels. There is a currently a large low latitude coronal hole approaching the central meridian of the Sun.

The Earth is currently under the influence of a high speed solar wind regime. The solar wind speed has fluctuated between 430 and 510 km/s. The total magnetic field strength has decreased from around 8 nT to 3 nT over the past 24 hours. The Bz component fluctuated around 0 nT, ranging between -5 and +5 nT (as recorded by ACE). Geomagnetic conditions ranged between Kp index 2-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours.

A recurrent low latitude equatorial coronal hole of negative polarity passed the central meridian two days ago. The effect of the High Speed Stream (HSS) was initially experienced yesterday morning at 04:00 UT when a ramp up in the solar wind speed was experienced, the solar wind speeds are expected to abate later today/tomorrow. A second low latitude is approaching sun centre, and the associated HSS is anticipated to reach Earth around 31-Aug-2019.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 000, na základě 15 stanic.

Solární indexy za 27 Aug 2019

Wolfovo číslo Catania	///
10cm sluneční tok	066
AK Chambon La Forêt	015
AK Wingst	///
Odhadovaný Ap	015
Odhadovaný mezinárodní počet slunečních skvrn	000 - Na základě 30 stanic

Souhrn významných událostí

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

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