Het archief bekijken van dinsdag 20 februari 2018

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2018 Feb 20 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
20 Feb 2018	069	005
21 Feb 2018	069	012
22 Feb 2018	069	007

Bulletin

There are no sunspot regions on the visible hemisphere of the Sun and flaring level is very low. The chance for a C flare in the next 24 hours is estimated at 5%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

Solar wind speed measured by DSCOVR decreased from about 570 to 440 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF) was directed towards the Sun and its magnitude varied between about 1 and 8 nT, with current values around 3 nT. Bz was variable and never below -5 nT. Solar wind is expected to decrease further in the next 24 hours as coronal hole high speed stream influence wanes.

Quiet to active geomagnetic conditions (K Dourbes between 1 and 4; NOAA Kp between 1 and 4) were registered in the past 24 hours. Quiet to unsettled levels (K Dourbes < 4) are expected on February 20, 21 and 22, with a chance for active conditions (K Dourbes = 4).

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 13 stations.

Zon indexen voor 19 Feb 2018

Wolfgetal Catania	///
10cm zonneflux	069
AK Chambon La Forêt	024
AK Wingst	021
Geschatte Ap	020
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 10 stations

Overzicht opvallende gebeurtenissen

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

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