Prohlížíte si archiv pátek 27. října 2017

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2017 Oct 27 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
27 Oct 2017	077	007
28 Oct 2017	077	007
29 Oct 2017	077	007

Bulletin

Quiet solar conditions were reported with the X-ray flux seeing only a low B1.8 class flare peaking at 00:44UT from Catania group 61 (NOAA region 2686). Both active regions on disk are relatively simple (Mag.Type: Alpha) and small. The X-ray flux is expected to remain below C level. Proton flux levels were at background values and are expected to remain so. No Earth directed CME's were recorded in coronagraph data.

Solar wind saw the decline of the coronal hole high speed stream influence, with solar wind velocity dropping steadily from near 575 km/s at the start of the period to around 450 km/s presently. At the start of the period total magnetic field was around 6.5nT with a prolonged period of negative values of the Bz component (-5nT). Afterwards total magnetic field was at a nominal 5nT level with a variable Bz. The magnetic field phi angle indicated predominantly connection to a positive sector. Solar wind conditions should continue to be at nominal levels. Some active geomagnetic conditions were recorded at the start of the period (both local K Dourbes and NOAA Kp 4) easing to quiet to unsettled conditions for the remainder of the period (local K Dourbes 1-2 and NOAA Kp 1-3). Quiet to unsettled geomagnetic conditions are expected over the next days.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 024, na základě 21 stanic.

Solární indexy za 26 Oct 2017

Wolfovo číslo Catania	024
10cm sluneční tok	077
AK Chambon La Forêt	027
AK Wingst	020
Odhadovaný Ap	021
Odhadovaný mezinárodní počet slunečních skvrn	024 - Na základě 21 stanic

Souhrn významných událostí

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

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