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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2017 Nov 26 1233 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
26 Nov 2017	075	006
27 Nov 2017	075	008
28 Nov 2017	075	016

Bulletin

Over the past 24 hours solar activity has been quiet. No significant flares have been recorded. All Active Regions (AR) have shown low levels of activity. A small filament eruption occurred near disk centre at around 04:00 UT on 2017-Nov-25, Coronagraph imagery suggests the bulk of the ejection headed to the East of the Sun-Earth line and only a glancing blow, if any, can be expected. If so, this is anticipated to arrive at Earth late on 2017-Nov-28. However, projection effects make it difficult to ascertain an accurate speed. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares. The solar wind speed been been decreasing from 400 to 320 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 0 and 5 nT, peaking around 00:00 UT this morning. The Bz component has fluctuated between positive and negative, between -4 and +5 nT. Geomagnetic conditions ranged between Kp index 0-2 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours. A small transient coronal hole has just passed the central meridian and may enhance solar wind speeds in a couple of days. Geomagnetic conditions are expected to be quiet.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 018, na základě 17 stanic.

Solární indexy za 25 Nov 2017

Wolfovo číslo Catania	///
10cm sluneční tok	074
AK Chambon La Forêt	005
AK Wingst	006
Odhadovaný Ap	005
Odhadovaný mezinárodní počet slunečních skvrn	016 - Na základě 16 stanic

Souhrn významných událostí

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

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