Het archief bekijken van donderdag 25 mei 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 May 25 1341 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
25 May 2017	074	001
26 May 2017	073	008
27 May 2017	074	016

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. NOAA Active Region (AR) 2660 has been most active, producing two B-class flares. No Earth directed Coronal Mass Ejections (CMEs) have been detected in coronagraph observations. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a small chance for C-class flares. Solar wind speed decreased from about 475 km/s to values around 370 km/s. The total interplanetary magnetic field (IMF) strength, as recorded by the DSCOVR satellite, was around 3.5 nT. Bz fluctuated between -2 and +3 nT. Geomagnetic conditions (K Dourbes between 0 and 3; NOAA Kp between 0 and 1) were ranged from quiet to unsettled level in the past 24 hours. Solar wind speed is expected to decrease even more today. In response geomagnetic conditions are likely to experience mostly quiet to unsettled conditions today (25-May-2017 April) and tomorrow (26-May-2017). Active conditions with a small chance for minor geomagnetic storm are possible on the day three (27-May-2017) due to possible arrival of 23-May 2017 coronal mass ejection.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 027, gebaseerd op 24 stations.

Zon indexen voor 24 May 2017

Wolfgetal Catania	035
10cm zonneflux	078
AK Chambon La Forêt	008
AK Wingst	004
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	024 - Gebaseerd op 31 stations

Overzicht opvallende gebeurtenissen

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

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