Aktuální sluneční data:

Mezinárodní číslo slunečních skvrn : 061

Sluneční záblesky : C-class flares expected, (probability >=50%)
Geomagnetická situace : Active conditions expected (A>=20 or K=4)
Sluneční protony : Quiet

Komentář : Multiple regions present on the sun with most magnetically complex the Catania 45/NOAA 2871, source of a M1.8 class flare. Over the next 24 hours, C-class flares can be expected with a slight possibility of further M class. A CME associated with the M2.9 class flare on Sep 23 04:27UT may arrive from Sep 26 22:57UT. The greater than 10 MeV proton flux was at background levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold. Over the next 24 hours, it is expected to increase towards the threshold. The 24h electron fluence was at nominal levels over the past 24 hours. Over the next 24 hours they are expected to remain at those levels, increasing towards moderate levels. Over the past 24 hours the solar wind speed increased, reaching from 510 km/s. The total magnetic field strength had values between 1 and 9 nT, while its Bz component varied between -6 and 7nT. The interplanetary magnetic field phi angle has predominantly been on the negative sector (directed towards the the Sun). We seem to be under the influence of the high speed stream associated with the negative coronal hole, crossing central meridian Sep 21 and the CME 19 seemed to have an impact about Sep 23 12:00UT. An extension of the northern positive coronal hole is presently at central meridian. Solar wind parameters are expected to remain ehanced. Geomagnetic conditions were at quiet to unsettled levels, (NOAA Kp 1-2 and K Dourbes 0-2) over the past 24 hours. Unsettled conditions with possibility of active events can be expected over the next 24 hours.

Zdroj : SIDC Ursigram

Předpověď sluneční aktivity pro období : September 24 - September 30, 2021

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