Prohlížíte si archiv pondělí 28. srpna 2017

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2017 Aug 28 1235 UTC

SIDC Předpověď

Sluneční erupce

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

Minor storm expected (A>=30 or K=5)

Sluneční protony

Quiet

	10cm tok	Ap
28 Aug 2017	078	006
29 Aug 2017	079	006
30 Aug 2017	080	005

Bulletin

Over the past 24 hours, solar activity was at the low level. The largest flare was a C6.3-class flare produced by Catania group 42 (NOAA region 2671) with a peak-time at 15:16UT August, 27. The photospheric magnetic field of Catania group 43 (NOAA region 2672) is slowly decaying from Beta-Gamma to Beta (Fai to Cao McIntosh Class), and Catania group 42 (NOAA region 2671) will disappear behind the solar West limb in a couple of hours. Therefore, solar activity is expected to remain low over the next 24 hours with a small probability of 10% of C-class flares.

No Earth directed Coronal Mass Ejections (CMEs) have been detected in available coronagraph imagery.

The solar protons remained at background level in the past 24 hours.

Over the past 24 hours, the solar wind speed was around 330 km/s and the interplanetary magnetic field strength remained around 5 nT with the component Bz fluctuating between -10 to 3 nT being mainly negative. A large coronal hole extending from the North pole to about 20 latitude South has now reached the central meridian. The associated fast solar wind is expected to arrive at Earth in Aguste, 31 around noon UT time.

The geomagnetic conditions are presently quiet with Kp (NOAA) and local K (Dourbes) indexes ranging between 1-3. The geomagnetic environment is expected to be at unsettled to active levels starting from Aguste, 31 due to the fast solar wind coming from the coronal hole.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 019, na základě 27 stanic.

Solární indexy za 27 Aug 2017

Wolfovo číslo Catania	///
10cm sluneční tok	078
AK Chambon La Forêt	017
AK Wingst	012
Odhadovaný Ap	011
Odhadovaný mezinárodní počet slunečních skvrn	034 - Na základě 26 stanic

Souhrn významných událostí

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

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