Prohlížíte si archiv pátek 19. července 2013

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2013 Jul 19 1316 UTC

SIDC Předpověď

Sluneční erupce

Eruptive (C-class flares expected, probability >=50%)

Geomagnetismus

Minor storm expected (A>=30 or K=5)

Sluneční protony

Quiet

	10cm tok	Ap
19 Jul 2013	113	023
20 Jul 2013	115	030
21 Jul 2013	116	015

Bulletin

Solar activity is still low with only two C-class flares reported during last 24 hours. Both of them were C2.3 flares originating from the NOAA AR 1800 situated at the moment close to the east solar limb. NOAA AR 1793 still has beta-gamma configuration of the photospheric magnetic field, and therefore, also the potential to produce C-class and possibly M-class flares. The prominence eruption on the east solar limb at about 17:59 UT on July 18 was associated with the CME first seen in the SOHO/LASCO C2 field of view at 18:24 UT. The CME had angular width of 130 degrees and projected speed of about 550 km/s, as reported by the CACTUS software. The CME might be Earth directed, however this cannot be confirmed, due to the data gap in STEREO observations. The Earth is inside the fast speed stream due to the low-latitude coronal hole in the northern hemisphere. At the moment the solar wind speed is 600 km/s and the interplanetary magnetic field (IMF) is rather stable with the magnitude of about 5 nT. The arrival of the coronal hole high speed stream resulted in active geomagnetic conditions (K = 4 reported by Dourbes, K = 5 reported by IZMIRAN and NOAA reported Kp=4) on July 18 and early on July 19. We expect minor storm conditions.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 056, na základě 13 stanic.

Solární indexy za 18 Jul 2013

Wolfovo číslo Catania	///
10cm sluneční tok	115
AK Chambon La Forêt	028
AK Wingst	020
Odhadovaný Ap	018
Odhadovaný mezinárodní počet slunečních skvrn	071 - Na základě 23 stanic

Souhrn významných událostí

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