Het archief bekijken van dinsdag 20 oktober 2015

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2015 Oct 20 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
20 Oct 2015	125	008
21 Oct 2015	125	014
22 Oct 2015	125	011

Bulletin

Solar activity was restricted to a handful of C-class flares, with a C3.9 flare as strongest one peaking at 17:27 UT on October 19. The C3.9 flare originated from NOAA 2436. Regions NOAA 2434 and 2437 also contributed to some flaring. NOAA 2436 has shown some minor growth in the number of spots. Flaring activity at the C-level is expected to continue. No Earth-directed CMEs were observed in the SOHO/LASCO images.

The solar wind speed was steady between 350 and 400 km/s, while the magnetic field magnitude reached maximally 6 nT. The phi angle was variable from 22:30 UT between a positive and negative orientation. Mostly quiet (K<3) to unsettled (K=3) geomagnetic conditions were observed, which are expected to continue. There is a chance for a few episodes of active (K=4) conditions due to the moderate speed stream from an equatorial coronal hole, expected to arrive on October 21.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 098, gebaseerd op 10 stations.

Zon indexen voor 19 Oct 2015

Wolfgetal Catania	111
10cm zonneflux	124
AK Chambon La Forêt	010
AK Wingst	005
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	087 - Gebaseerd op 14 stations

Overzicht opvallende gebeurtenissen

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

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