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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2016 Feb 20 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

C-class flares expected, (probability >=50%)

Geomagnetismus

Active conditions expected (A>=20 or K=4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
20 Feb 2016	095	012
21 Feb 2016	096	007
22 Feb 2016	097	018

Bulletin

In the past 24 hours, two low C flares were released by returning region NOAA AR 2490 behind the southeastern limb. The brightest flare was a C2.7 flare which peaked at 23:10 UT on February 19. C flares (probability 70%) are expected within the next 24 hours, with a chance for an M flare (probability 20%), especially from returning region 2490. In the past 24 hours, the solar wind speed measured by ACE gradually decreased from about 560 km/s to 490 km/s. The magnitude of the Interplanetary Magnetic Field ranged between 1 and 6 nT. Over the past 24 hours, quiet to active geomagnetic levels were registered (K Dourbes between 1 and 4; NOAA Kp between 2 and 3). Quiet to active levels (K Dourbes < 5) are expected on February 20, and quiet to unsettled levels (K Dourbes < 4) on February 21 and 22.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 052, basierend auf 07 Stationen.

Solarindizes für den 19 Feb 2016

Wolf-Zahl Catania	039
10cm Solarflux	094
AK Chambon La Forêt	027
AK Wingst	019
Geschätzer Ap-Wert	019
Geschätzte internationale Sonnenfleckenzahl	048 - Basierend auf 21 Stationen

Zusammenfassung auffälliger Ereignisse

Zur Verfügung gestellt vom Solar Influences Data Analysis Center© - SIDC - Verarbeitet von SpaceWeatherLive

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