Het archief bekijken van vrijdag 12 juni 2015

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2015 Jun 12 1231 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
12 Jun 2015	145	014
13 Jun 2015	150	007
14 Jun 2015	155	008

Bulletin

About a dozen C-class flares occurred during the past 24 hours, originating from Catania sunspot regions 79, 80 and 87 (NOAA active regions 2360, 2361 and 2367). The largest flare was a C8.3 flare peaking at 14:37 UT on June 11, coming from Catania region 87. Catania region 83 has developed to a beta-gamma region. More C-class flares are expected and quite likely also an isolated M-class flare. Two rather narrow CMEs (first measurements at 11:00 UT and 14:48 UT on June 11 in LASCO/C2) of less than 100 degrees angular width are propagating to the East without any expected geoeffectiveness.

High speed stream effects on Earth are reducing. Solar wind speed has decreased from 600 to 450 km/s, while the magnetic field magnetic was maximally at 5 nT. Geomagnetic conditions are quiet to unsettled (K= 1 to 3), with a single time slot of active levels (K=4) at Dourbes. Geomagnetic conditions might enhance in case of arrival of the June 9 CME, potentially expected today. The arrival of a new high speed stream is expected on June 14 or 15, emanating from a negative polarity equatorial coronal hole.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 079, gebaseerd op 21 stations.

Zon indexen voor 11 Jun 2015

Wolfgetal Catania	///
10cm zonneflux	140
AK Chambon La Forêt	013
AK Wingst	014
Geschatte Ap	013
Geschat internationaal zonnevlekkengetal	073 - Gebaseerd op 24 stations

Overzicht opvallende gebeurtenissen

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

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