Het archief bekijken van vrijdag 22 juni 2018

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2018 Jun 22 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

Quiet (A<20 and K<4)

Proton Flux monitor

Quiet

	10cm flux	Ap
22 Jun 2018	082	001
23 Jun 2018	081	016
24 Jun 2018	080	017

Bulletin

The solar activity has been quiet over the past 24 hours with an isolate B1.4-class flare. Catania sunspot group 86 and 87 (NOAA active region 2713 and 2714) did not produce any flare. Catania sunspot group 86 (NOAA active region 2713) will soon turn around the West limb. Catania sunspot group 88 (NOAA active region 2715) produced the B1.4-class flare, while it continues to grow it did not show any stronger activity as we were expecting yesterday. Flaring conditions are expected to remain quiet with a relatively small chance of a C-class flare.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

Solar wind ambient environment continued its return towards a background and slow solar wind speed regime. The solar wind speed decreased from about 390 to near 345 km/s. The interplanetary magnetic field is at its nominal condition with the total magnetic field strength below 3.5 nT and the southward component fluctuating between -2 and +2.5 nT. Enhancement of the solar wind conditions are expected on June 23 due to the arrival of the fast solar wind associated to the north pole coronal hole that has passed the central meridian on the June 20.

Geomagnetic conditions have been quiet over the past 24 hours. The Kp index (NOAA) ranged between 0-1 and local K index 0-2 (Dourbes). The geomagnetic conditions are expected to remained quiet for the next period until June 23 with the arrival of the fast solar wind.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 045, gebaseerd op 24 stations.

Zon indexen voor 21 Jun 2018

Wolfgetal Catania	063
10cm zonneflux	082
AK Chambon La Forêt	005
AK Wingst	///
Geschatte Ap	004
Geschat internationaal zonnevlekkengetal	053 - Gebaseerd op 29 stations

Overzicht opvallende gebeurtenissen

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

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