Prohlížíte si archiv čtvrtek 19. srpna 2021

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2021 Aug 19 1231 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
19 Aug 2021	075	007
20 Aug 2021	075	007
21 Aug 2021	075	007

Bulletin

One active region is visible on the solar disk: NOAA 2858 (beta magnetic field configuration). This region emerged in the past 24 hours, close to disk center. Solar activity has been very low and is expected to remain so (unless the new AR grows in size and complexity in the coming hours).

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

The greater than 10 MeV proton flux was at background levels in the past 24 hours, and is expected to remain so in the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, while the 24h electron fluence was at normal levels over the past 24 hours. Over the next 24 hours they are expected to remain at those levels.

Over the past 24 hours the solar wind speed has decreased to 330 km/s. The total magnetic field strength was around 4 nT, with positive polarity (directed away from the Sun). Same conditions are expected for the next 24 hours.

Geomagnetic conditions were at quiet to unsettled levels (NOAA Kp 0-2 and K Dourbes 0-3) over the past 24 hours. Similar conditions are expected over the next 24 hours.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 022, na základě 13 stanic.

Solární indexy za 18 Aug 2021

Wolfovo číslo Catania	012
10cm sluneční tok	075
AK Chambon La Forêt	008
AK Wingst	007
Odhadovaný Ap	005
Odhadovaný mezinárodní počet slunečních skvrn	014 - Na základě 18 stanic

Souhrn významných událostí

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

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