Het archief bekijken van woensdag 14 april 2021

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2021 Apr 14 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
14 Apr 2021	074	003
15 Apr 2021	074	006
16 Apr 2021	076	012

Bulletin

The solar activity remained at very low levels over the last 24 hours. Sunspot group Catania 86 (NOAA 2814) showed low levels of activity and remained with a bipolar Bxo Beta classification. The flaring activity within the next 24 hours is expected to remain low with a minor chance for a C-class flare.

A faint slow partial halo coronal mass ejection (CME) was detected by LASCO C2 and C3 coronagraphs on April 13th. This CME is back-sided and will not impact the Earth. No other Earth-directed CMEs were detected in the available coronagraph imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next 24 hours. The greater than 2MeV electron flux remained under the 1000 pfu threshold and is expected to remain so. The 24h electron fluence was at nominal levels and is expected to remain in the next 24 hours.

Over the past 24 hours all solar wind parameters (ACE and DSCOVR) remained at low levels. The solar wind speed gradually increased to 430 km/s. The total magnetic field reached a maximum of 7.5 nT with a minimum Bz component of -4 nT.

Quiet geomagnetic conditions were observed over the past 24 hours. Predominantly quiet geomagnetic conditions are expected for the next 24 hours with a minor possibility for isolated unsettled periods. A small negative polarity equatorial coronal hole (CH) crossed the central meridian on April 13th. Sustained periods of unsettled to active geomagnetic conditions could be expected on April 16th if the high speed stream from this CH reaches Earth.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 020, gebaseerd op 21 stations.

Zon indexen voor 13 Apr 2021

Wolfgetal Catania	024
10cm zonneflux	073
AK Chambon La Forêt	010
AK Wingst	006
Geschatte Ap	006
Geschat internationaal zonnevlekkengetal	019 - Gebaseerd op 30 stations

Overzicht opvallende gebeurtenissen

Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive

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