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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2019 Aug 20 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
20 Aug 2019	068	009
21 Aug 2019	067	011
22 Aug 2019	067	010

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 last 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.

The solar wind parameters show some enhancements starting from August 20, around 01:00 UT: The wind speed increased from 315 km/s to 425 km/s, the total interplanetary magnetic field reached 10 nT, and the Bz component varied between -7 nT and +7 nT (as recorded by ACE). The solar wind parameters may remain slightly enhanced for the next period due to the effect of a southern coronal hole of negative polarity that was facing Earth on August 18 in about two days.

Mostly quiet geomagnetic conditions were observed, Dourbes observed unsettled conditions (K=3) that can be associated with the effect of the southern coronal hole. Quiet to unsettled conditions are expected for the next period, with small chances of short periods of active conditions.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 000, na základě 20 stanic.

Solární indexy za 19 Aug 2019

Wolfovo číslo Catania	///
10cm sluneční tok	068
AK Chambon La Forêt	007
AK Wingst	004
Odhadovaný Ap	004
Odhadovaný mezinárodní počet slunečních skvrn	000 - Na základě 31 stanic

Souhrn významných událostí

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

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