Het archief bekijken van zondag 25 mei 2014

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2014 May 25 1217 UTC

SIDC Prognose

Zonnevlammen

Active (M-class flares expected, probability >=50%)

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
25 May 2014	120	007
26 May 2014	122	016
27 May 2014	122	007

Bulletin

There were five C flares and an M flare during the past 24 hours, all released by NOAA AR 12065. The long duration M1.3 flare peaked at 18:35 UT on May 24. No Earth-directed CMEs were observed. STEREO COR2 B imagery registered a CME at 23:09 UT on May 24, but this CME was probably associated to a backside event. In the next 48 hours, the probability for C flares is very high (95%) and for M flares around 60%, especially from NOAA AR 12065. Over the last 24 hours, the solar wind speed as observed by ACE decreased from around 450 km/s to about 430 km/s. Meanwhile the magnitude of the Interplanetary Magnetic Field (IMF) varied between 2 and 4 nT. Over the last 24 hours, geomagnetic conditions were quiet (K Dourbes between 1 and 3; NOAA Kp between 1 and 2). Quiet geomagnetic levels (K Dourbes < 4) are expected on May 25 and 27. Quiet geomagnetic conditions with active (K Dourbes = 4) periods are possible on May 26, due to the expected arrival of a coronal hole high speed stream.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 074, gebaseerd op 13 stations.

Zon indexen voor 24 May 2014

Wolfgetal Catania	///
10cm zonneflux	118
AK Chambon La Forêt	012
AK Wingst	006
Geschatte Ap	006
Geschat internationaal zonnevlekkengetal	081 - Gebaseerd op 23 stations

Overzicht opvallende gebeurtenissen

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

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