Prohlížíte si archiv čtvrtek 17. června 2021

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2021 Jun 17 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
17 Jun 2021	076	007
18 Jun 2021	075	005
19 Jun 2021	075	004

Bulletin

Solar activity remained at very low levels in the last 24 hours. NOAA AR2833 (Catania sunspot group 7) remained with simple unipolar magnetic filed configuration and is the only active region one the visible solar disc. The X-ray flare activity is expected to remain at very low levels for the next 24 hours.

No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next 24 hours. The greater than 2MeV electron flux crossed the 1000 pfu threshold at 08:20 UTC this morning and is expected to remain above the threshold for an extended period of time. The 24h electron fluence increased from nominal to moderate level and is expected to remain at moderate levels for the next 24 hours.

Over the past 24h the solar wind (ACE and DSCOVR) remained under the influence of a high speed stream (HSS). The solar wind speed varied between 535 km/s and 633 km/s. The total magnetic field was at low values, in the range of 1.5 nT to 5.6 nT. The Bz component mildly fluctuated between -4.4 nT and 3.3 nT. The solar temperature remained elevated and the orientation of the interplanetary magnetic field remained predominantly in the negative sector.

The geomagnetic conditions over the past 24 hours were quiet to unsettled. Quiet to unsettled geomagnetic conditions are expected for the next 24 hours. Isolated active periods remain possible until the effects of the HSS fade away.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 012, na základě 25 stanic.

Solární indexy za 16 Jun 2021

Wolfovo číslo Catania	011
10cm sluneční tok	076
AK Chambon La Forêt	019
AK Wingst	017
Odhadovaný Ap	018
Odhadovaný mezinárodní počet slunečních skvrn	011 - Na základě 29 stanic

Souhrn významných událostí

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

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