Het archief bekijken van woensdag 19 februari 2020

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2020 Feb 19 1231 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
19 Feb 2020	071	017
20 Feb 2020	071	015
21 Feb 2020	071	007

Bulletin

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

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

The solar wind speed is at 485 km/s with interplanetary magnetic field magnitude of 5 nT. Geomagnetic conditions reached K = 4 locally at Dourbes and Kp = 5 overnight, due to long periods of negative Bz (reaching -12 nT). This is due to the expected solar wind streams from small patchy negative polarity equatorial coronal holes, probably mixed with a slow ICME (possibly leaving the Sun on 12 February). More active periods can be expected in the coming 48 h due to these high speed streams (including the low latitudinal extension of the southern polar coronal hole).

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 20 stations.

Zon indexen voor 18 Feb 2020

Wolfgetal Catania	000
10cm zonneflux	071
AK Chambon La Forêt	026
AK Wingst	014
Geschatte Ap	013
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 25 stations

Overzicht opvallende gebeurtenissen

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

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