Het archief bekijken van vrijdag 29 september 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Sep 29 1230 UTC

SIDC Prognose

Zonnevlammen

Quiet conditions (<50% probability of C-class flares)

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
29 Sep 2017	093	015
30 Sep 2017	093	012
01 Oct 2017	092	007

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. Catania group 55 (NOAA AR region 2681) has been most active, producing one B2.9 flare peaking at 14:34 UT yesterday (29-Sep-2017). No Earth directed Coronal Mass Ejections (CMEs) have been detected in coronograph observations. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with some probability of C-class flares. The Earth is still inside the fast solar wind stream with the speed of about 640 km/s. However the magnitude of the interplanetary magnetic field remained below 5 nT over the past 24 hours, while Bz component varied between -4 and 4.4 nT. Geomagnetic conditions were active yesterday afternoon (Kp = 4 at 12-21 UT; 28 Sep-2017). Later, after a single episode of minor storm (Kp = 5 at 21-24 UT; 28-Sep-2017) geomagnetic conditions became unsettled (29-Sep-2017) with Kp (NOAA) and local K (Dourbes) indexes ranging between 1-3 and 2-3 respectively. The geomagnetic conditions are expected to remain from unsettled to active (Kp = 4) at least until 01-Oct-2017.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 046, gebaseerd op 20 stations.

Zon indexen voor 28 Sep 2017

Wolfgetal Catania	059
10cm zonneflux	091
AK Chambon La Forêt	037
AK Wingst	040
Geschatte Ap	044
Geschat internationaal zonnevlekkengetal	047 - Gebaseerd op 31 stations

Overzicht opvallende gebeurtenissen

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

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