Het archief bekijken van donderdag 18 mei 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 May 18 1231 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Minor storm expected (A>=30 or K=5)

Proton Flux monitor

Quiet

	10cm flux	Ap
18 May 2017	072	010
19 May 2017	072	020
20 May 2017	072	024

Bulletin

In the past 24 hours, no C flares were observed. Very low solar activity (no C flares) is expected in the next 24 hours. Solar wind speed measured by DSCOVR decreased from about 470 to 400 km/s in the past 24 hours. The magnitude of the Interplanetary Magnetic Field (IMF) varied between about 1 and 10 nT. Enhanced solar wind conditions are expected to start in the second half of May 19 due to the arrival of a high speed stream from a negative equatorial coronal hole. Quiet to unsettled geomagnetic conditions (K Dourbes between 2 and 3; NOAA Kp between 1 and 4) were registered in the past 24 hours. Quiet to unsettled levels are expected on May 18 and the first half of May 19, with a slight chance for active geomagnetic levels (K Dourbes = 4). Active (K Dourbes = 4) to minor storm conditions (K Dourbes = 5) are possible in the second half of May 19 and on May 20, due to the expected high speed stream.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 023, gebaseerd op 14 stations.

Zon indexen voor 17 May 2017

Wolfgetal Catania	044
10cm zonneflux	071
AK Chambon La Forêt	///
AK Wingst	009
Geschatte Ap	009
Geschat internationaal zonnevlekkengetal	012 - Gebaseerd op 31 stations

Overzicht opvallende gebeurtenissen

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

Alle tijden in UTC

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