Het archief bekijken van donderdag 20 november 2014

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2014 Nov 20 1156 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
20 Nov 2014	175	013
21 Nov 2014	180	012
22 Nov 2014	185	012

Bulletin

Three C-class flares were reported during the past 24 hours. The two weaker ones (C2.4 and C2.6 yesterday evening) were produced by the NOAA AR 2209. The strongest flare (C7.6 peaking at 06:41 UT today) was produced by a large unnumbered sunspot group that just appeared from behind the east limb. We expect this group to produce more C-class flares, possibly with an isolated M-class flare. NOAA AR 2209 started to decay in area and in number of sunspots, although it still maintains the beta-gamma-delta configuration of its photospheric magnetic field. We expect C-class flares from this region, with an M-class flare possible but unlikely. The Earth is currently inside a slow (around 400 km/s) solar wind flow with slightly elevated interplanetary magnetic field (IMF) magnitude (6-7 nT). Due to this slight elevation of the IMF magnitude, one interval of K = 4 was reported by IZMIRAN and NOAA in the past 24 hours. The K-index measurements by Dourbes remained at the quiet to unsettled levels (K < 4). We expect quiet to unsettled (K < 4) geomagnetic conditions to persist, possibly with isolated intervals of active (K = 4) conditions.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 044, gebaseerd op 10 stations.

Zon indexen voor 19 Nov 2014

Wolfgetal Catania	///
10cm zonneflux	170
AK Chambon La Forêt	014
AK Wingst	012
Geschatte Ap	010
Geschat internationaal zonnevlekkengetal	058 - Gebaseerd op 10 stations

Overzicht opvallende gebeurtenissen

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

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