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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2020 Jul 09 1231 UTC

Vorhersage des SIDC

Sonneneruptionen

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

Geomagnetismus

Quiet (A<20 and K<4)

Sonnenprotonen

Quiet

	10cm Fluss	Ap
09 Jul 2020	067	005
10 Jul 2020	068	005
11 Jul 2020	068	003

Bulletin

Solar activity was at very low levels and is expected to remain so. The Sun was spotless. Two filament eruptions took place resp. around 20UT near S35W10 and shortly after midnight near N45W50. Coronal dimming was observed in both cases. STEREO-A coronagraphic imagery indicates two related CMEs: a faint one around 02UT (250 km/s) and a more solid and faster one around 03:30UT (360 km/s). Based on the limited imagery, at least the first CME may have an earth-directed component. Geomagnetic effects are possible around 13 July, but standing-by further imagery for a more accurate assessment.

The greater than 10 MeV proton flux and the greater than 2 MeV electron flux were at nominal levels during the last 24 hours and are expected to remain so.

No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery.

Solar wind speed continued its gradual decline from about 370 km/s to its current values near 325 km/s (DSCOVR). Bz varied between -4 and +3 nT, being mostly negative after 03UT. The direction of the interplanetary magnetic field (phi angle) was directed away from the Sun (positive sector).

Geomagnetic activity was at quiet levels. Geomagnetic conditions are expected to be mostly quiet, with a chance on an unsettled interval later today or early on 10 July if a glancing blow from the 5 July CME would materialize.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 17 Stationen.

Solarindizes für den 08 Jul 2020

Wolf-Zahl Catania	000
10cm Solarflux	067
AK Chambon La Forêt	005
AK Wingst	003
Geschätzer Ap-Wert	002
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 19 Stationen

Zusammenfassung auffälliger Ereignisse

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

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