Het archief bekijken van dinsdag 28 april 2015

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2015 Apr 28 1230 UTC

SIDC Prognose

Zonnevlammen

Eruptive (C-class flares expected, probability >=50%)

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
28 Apr 2015	100	014
29 Apr 2015	100	016
30 Apr 2015	100	018

Bulletin

Only three active regions (AR) are visible on the solar disk. Flaring activity was limited to an impulsive C1.9 flare from NOAA AR 2331, peaking at 5:19 UT on April 28. A filament eruption occurred from 2:55 UT, April 28 on near N10E50. Coronagraphic images are not available yet to analyze any associated CME. Further flaring at the C-level is expected. Earth is currently inside a slow solar wind (speed in the range 280-350 km/s). The magnitude of the interplanetary magnetic field (IMF) is stable near 7nT, with a mainly negative Bz and a negative (toward) phi angle. Quiet to unsettled (local K=0 to 3 at Dourbes) geomagnetic conditions were observed and are largely expected to remain so. There is some chance for a few time slots of active (K=4) to minor storm (K=5) conditions, due to an expected flow from a positive polarity coronal hole, on April 29 and 30.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 032, gebaseerd op 17 stations.

Zon indexen voor 27 Apr 2015

Wolfgetal Catania	///
10cm zonneflux	108
AK Chambon La Forêt	010
AK Wingst	007
Geschatte Ap	006
Geschat internationaal zonnevlekkengetal	035 - Gebaseerd op 25 stations

Overzicht opvallende gebeurtenissen

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

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