Vorhersage Details

Ausgestellt: 2019 Apr 24 0030 UTC
Erstellt von NOAA, Space Weather Prediction Center und verarbeitet SpaceWeatherLive.com

Sonnenaktivität

24h Zusammenfassung
Solar activity was very low under a spotless solar disk. No Earth-directed CMEs were observed in available satellite imagery.
Vorhersage
Solar activity is expected to be very low for the forecast period (24-26 Apr).

Energiereiche Teilchen

24h Zusammenfassung
The greater than 2 MeV electron flux was at normal to moderate levels and the greater than 10 MeV proton flux remained at background values.
Vorhersage
The greater than 2 MeV electron flux is expected to be at normal to moderate levels on 24-25 Apr, with a chance for high levels on 26 Apr, due to CH HSS influences. The greater than 10 MeV proton flux is expected to continue at background levels.

Sonnenwind

24h Zusammenfassung
Solar wind parameters were indicative of a solar sector boundary crossing. Parameters were at nominal levels until approximately 23/1500 UTC when total field and density started to increase. Total field rose to a maximum of 11 nT at 23/2000 UTC while the Bz component deflected southward to -9 nT. Solar wind speed remained at nominal levels in the 330-415 km/s range. Phi angle was mostly oriented in a positive (away) solar sector until 23/1820 UTC when it switched into a negative (towards) sector.
Vorhersage
Late on 24 Apr to early on 25 Apr, a negative polarity CH HSS is expected to enhance the solar wind. Solar wind speeds in the 500-600 km/s range is likely based on STEREO A data.

Geospace

24h Zusammenfassung
The geomagnetic field was quiet to unsettled.
Vorhersage
Quiet to active conditions are expected on 24-25 Apr due to CIR effects and associated CH HSS influence. Quiet to unsettled levels are expected on 26 Apr, with a chance for an isolated active period, due to residual CH HSS effects.

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Weltraumwetter Fakten

Letzte X-Klasse:10/09/2017X8.2
Letzte M-Klasse:20/10/2017M1.0
Letzter geomagnetischer Sturm:17/03/2019Kp5 (G1)
Anzahl der fleckenlose Tage im Jahr 2019:65
Aktuelle Strecke fleckenlose Tage:4

An diesem Tag in der Geschichte*

Sonneneruptionen
12003M3.3
22001M3.1
32001M2.3
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52001M1.8
ApG
1201241G3
2199835G2
3200327G1
4199526G1
5201324G1
*seit 1994

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