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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2019 Jul 09 1230 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

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

Sonnenprotonen

Quiet

	10cm Fluss	Ap
09 Jul 2019	067	011
10 Jul 2019	066	007
11 Jul 2019	065	007

Bulletin

No active regions visible on the Sun. No flares observed, nor expected.

No Earth directed CMEs in past 24 h. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 460 km/s with interplanetary magnetic field magnitude of 5 nT. A shock in the solar wind was detected on June 8 around 18:30 UT (18:38 UT at SOHO and 18:29 UT at ACE). DSCOVR data seem to be not available, so we are using a combination of ACE and SOHO, since ACE data are not reliable when the density is very low. The magnetic field jumped from 4 to 10 nT and the solar wind speed from 310 km/s to 380 km/s. It was probably associated with the expected arrival of a weak high speed solar wind stream, probably mixed with an ICME (without clear origin yet). Geomagnetic conditions have reached active levels both locally at Dourbes (from 19:00 UT on July 8 until 01:00 UT on July 9) and at planetary levels (for a 3 hours period starting at 18:00 UT). Unsettled to active conditions can be expected in the next 48 h if the high speed solar wind streams develops further.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 22 Stationen.

Solarindizes für den 08 Jul 2019

Wolf-Zahl Catania	012
10cm Solarflux	067
AK Chambon La Forêt	015
AK Wingst	011
Geschätzer Ap-Wert	010
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 25 Stationen

Zusammenfassung auffälliger Ereignisse

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

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