Het archief bekijken van zaterdag 2 september 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Sep 02 1235 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
02 Sep 2017	094	024
03 Sep 2017	093	012
04 Sep 2017	092	006

Bulletin

Over the past 24 hours solar activity remained low. There were four sunspot regions, and only Catania group 47 (NOAA region 2674) sowed some flaring activity and produced four C-class flares. The largest one was a C2.0-class flare with a peak-time at 15:37 UT September 1. Catania group 43 (NOAA region 2672) is on West solar limb and will disappear in a couple of hours. The photospheric magnetic complexity of Catania group 47 (NOAA region 2674) has increased, therefore we expect a higher probability of C-class flare with possibly the occurrence of an M-class flare. A new active region is turning over the East solar limb, which might start to also contribute the solar activity.

No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery and the solar protons remains at background level.

The Earth remained in the fast solar wind with the speed that has slowly decreased from 700 to about 600 Km/s. The interplanetary magnetic field magnitude has also slowly decreased from 10 nT to about 4 nT, and the Bz component fluctuating between -5 and 2 nT.

The geomagnetic conditions were active with K-Dourbes ranging between 2 and 4, and Kp-NOAA between 2 and 5. The observed moderated storm (Kp-NOAA = 5) on September 2, between 03:00 and 09:00 UT was due to Bz component that stayed negative for a longer period. The geomagnetic conditions are expected to vary between unsettled to active conditions until the high speed stream has fade, and then to reduce to quiet to unsettled on September 3.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 063, gebaseerd op 22 stations.

Zon indexen voor 01 Sep 2017

Wolfgetal Catania	061
10cm zonneflux	093
AK Chambon La Forêt	030
AK Wingst	020
Geschatte Ap	020
Geschat internationaal zonnevlekkengetal	069 - Gebaseerd op 31 stations

Overzicht opvallende gebeurtenissen

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

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