Archiv von Sonntag, 4 Januar 2015 anzeigen

Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2015 Jan 04 1220 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
04 Jan 2015	152	010
05 Jan 2015	155	018
06 Jan 2015	157	012

Bulletin

Only 6 low-level C-class flares were recorded, with the strongest event a C2.1 flare peaking at 04:52UT. All these flares had NOAA 2253 as their source, the only group that has been actively flaring during the last 24 hours. The negative polarity spot from yesterday's delta structure in NOAA 2253 has moved out of the region's positive polarity leading portion. No CME was associated to yesterday's isolated M-class flare. Some magnetic polarity mixing is present in the trailing portion of NOAA 2255. C-class flaring is expected, with a chance on an isolated M-class flare from NOAA 2253. The geomagnetic field was quiet to unsettled. Solar wind speed decreased from about 500 km/s around 09:30UT (03 January) to its current values just below 400 km/s. Bz was mostly positive till 20:00UT with values up to +8 nT, and steadily becoming negative after 02:00UT with values near -8 nT at the end of the period. In between, Bz was stable near slightly positive values. The influence of the high speed stream from the extension of the southern polar coronal hole is still expected for later today or tomorrow (05 January). The geomagnetic field is expected to be unsettled to active with a chance on a minor geomagnetic storm episode.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 074, basierend auf 13 Stationen.

Solarindizes für den 03 Jan 2015

Wolf-Zahl Catania	///
10cm Solarflux	149
AK Chambon La Forêt	012
AK Wingst	014
Geschätzer Ap-Wert	015
Geschätzte internationale Sonnenfleckenzahl	078 - Basierend auf 10 Stationen

Zusammenfassung auffälliger Ereignisse

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

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