Het archief bekijken van maandag 23 oktober 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Oct 23 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
23 Oct 2017	077	009
24 Oct 2017	079	037
25 Oct 2017	080	046

Bulletin

Solar activity was very low with only a single B2.2 flare peaking at 12:41 UT from a new region rotating around the East limb in the Northern hemisphere. The region is now numbered Catania group 61 or NOAA region 2686. Although there is a chance for C flares and even a slight chance for an M flare from both regions on disk, the general outlook is that flaring will remain below C level. Proton flux levels were at background values and are expected to remain so. No Earth directed CME's were recorded in coronagraph data.

Solar wind speed declined slightly from around 430 km/s to around 380 km/s. Total magnetic field was below 6nT with Bz variable and not below -4nT. The magnetic field phi angle indicated connection to a negative sector. Solar wind is expected to see transition into a positive polarity sector later today and which is then followed by the influence of the high speed stream from the equatorial extension of the northern polar positive polarity coronal hole that started transiting the central meridian around noon October 20. Geomagnetic conditions were quiet to unsettled (both local K Dourbes and NOAA Kp 1-3). Geomagnetic conditions are expected to increase under the influence of the upcoming high speed stream. Associated geomagnetic activity is expected to remain limited to possible periods of minor geomagnetic storming over the next days.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 023, gebaseerd op 14 stations.

Zon indexen voor 22 Oct 2017

Wolfgetal Catania	///
10cm zonneflux	077
AK Chambon La Forêt	009
AK Wingst	006
Geschatte Ap	006
Geschat internationaal zonnevlekkengetal	012 - Gebaseerd op 27 stations

Overzicht opvallende gebeurtenissen

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

Alle tijden in UTC

<< Keer terug naar de dagelijkse overview pagina