Prohlížíte si archiv středa 27. února 2019

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2019 Feb 27 1230 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
27 Feb 2019	071	012
28 Feb 2019	070	021
01 Mar 2019	071	012

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. No significant Active Regions (AR) or filament channels are present on the solar disk. The greater-than 10 MeV proton flux was at nominal values. A negative polarity equatorial coronal hole (CH) has reached W55S15.

Solar activity is expected to remain at low levels.

The solar wind speed has fluctuated between 300 and 340 km/s (DSCOVR) over the past 24 hours, with a small increase experienced over the past 6 hours. The total magnetic field strength has fluctuated between 3 nT and 7 nT (DSCOVR). The Bz component fluctuated around 0 nT, ranging between -6 and +3 nT, but has been mainly negative for the past 3 hours. Geomagnetic conditions ranged between Kp index 0-1 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours. A negative polarity coronal hole is currently positioned near W55S15 in the Western hemisphere of the Sun and the associated co-rotating interaction region (CIR) and high-speed stream (HSS) may enhance solar wind speeds later today and for the next few days, the increasing negative Bz and enhancements in solar wind speed over the past few hours may indicate the arrival of the CIR/HSS. As a consequence geomagnetic activity is expected to reach to active conditions later today, and possibly persist for the next few days.

Geomagnetic conditions are expected to be unsettled to active from later today.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 000, na základě 20 stanic.

Solární indexy za 26 Feb 2019

Wolfovo číslo Catania	000
10cm sluneční tok	071
AK Chambon La Forêt	005
AK Wingst	002
Odhadovaný Ap	002
Odhadovaný mezinárodní počet slunečních skvrn	000 - Na základě 34 stanic

Souhrn významných událostí

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

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