Aktuální sluneční data:

Mezinárodní číslo slunečních skvrn : 021

Sluneční záblesky : Quiet conditions (<50% probability of C-class flares)
Geomagnetická situace : Minor storm expected (A>=30 or K=5)
Sluneční protony : Quiet

Komentář : The solar activity has been quiet over the past 24 hours. The sunspot group (NOAA 2718) remained stable and no significant flare has been recorded. A new sunspot group is currently developing on the East-South quadrant of the solar disc. Quiet flaring conditions with a chance of C-class flares from this new sunspot are expected. No Earth directed Coronal Mass Ejection has been observed. The solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so. The solar wind parameters have shown a return towards an ambient-background and slow solar wind speed regime. The wind speed unsteadily decreased from 575 to near 430 km/s. Total interplanetary magnetic field strength was fairly steady remaining below 5 nT. The Southward magnetic component fluctuated between -5 and 5 nT with no prolonged period of southward direction. The solar wind speed is expected to continue its return towards nominal values today and tomorrow morning. The solar wind will then be re- enhanced due to the arrival of the fast solar wind associated with the equatorial coronal hole of negative polarity that has reached the central meridian on August 17. Another equatorial coronal hole (located around -15 degree latitude) of negative polarity has reached the central meridian today, the enhancement of the solar wind due to this coronal hole is expected to come relatively fast after. The geomagnetic conditions were quiet to unsettled. The conditions are expected to return to quiet as the solar wind speed is returning towards slow wind regime. Unsettled to active conditions are then expected by August 20 in the afternoon due to the influence of the solar wind associated to the coronal hole (that has reached the central meridian on August 17).

Zdroj : SIDC Ursigram

Předpověď sluneční aktivity pro období : 30.11.2019 až 6.12.2019

Zdroj : http://www.asu.cas.cz/~sunwatch

Poslední fotografie ze SOHO / SDO:
Různé barvy snímků prozrazují odlišné vlnové délky - každá vlnová délka je vyzařována plynem o určité teplotě: oranžová: 80 000 °C, modrá: 1 000 000 °C, zelená: 1 500 000 °C, hnědá: 2 500 000 °C.

He II/Si XI 30,4 nm 80 000 °C EIT 304	Fe IX/X 17,1 nm 1 000 000 °C EIT 171	Fe XII 19,5 nm 1 500 000 °C EIT 195	Fe XV 28,4 nm 2 500 000 °C EIT 284
SDO/HMI Continuum	SDO/HMI Magnetogram	LASCO C2	LASCO C3