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Tägliches Bulletin zur solaren und geomagnetischen Aktivität des SIDC

Ausgestellt: 2020 Jul 19 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
19 Jul 2020	068	005
20 Jul 2020	068	007
21 Jul 2020	069	005

Bulletin

Solar activity was at very low levels and is expected to remain so.

No earth-directed coronal mass ejections (CMEs) were observed in the available coronagraphic imagery. A negative polarity equatorial coronal hole began to traverse the central meridian on 19 July.

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

The solar wind speed ranged between 320 km/s to 370 km/s (DSCOVR). The total magnetic field remained below 6 nT. Bz ranged between -6 and +2 nT. The direction of the interplanetary magnetic field (phi angle) was mostly directed away from the Sun (positive sector). For the next 24 hours the solar wind speed is expected to remain at nominal levels. An extension to the southern polar coronal hole and a small patchy positive polarity equatorial coronal hole, which began to transit the central meridian on Jul 16, may cause a slight enhancement to the solar wind conditions from 20 July.

Geomagnetic activity was mostly quiet (local K Dourbes and NOAA Kp recorded values between 0-3 and 0-1, respectively). Geomagnetic conditions are expected to be mostly quiet on 19 - 21 July, with possible unsettled conditions from late on 20 July.

Die heute international geschätzte Sonnenfleckenanzahl (ISN): 000, basierend auf 25 Stationen.

Solarindizes für den 18 Jul 2020

Wolf-Zahl Catania	///
10cm Solarflux	068
AK Chambon La Forêt	008
AK Wingst	006
Geschätzer Ap-Wert	004
Geschätzte internationale Sonnenfleckenzahl	000 - Basierend auf 30 Stationen

Zusammenfassung auffälliger Ereignisse

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

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