Prohlížíte si archiv středa 22. ledna 2014

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2014 Jan 22 1330 UTC

SIDC Předpověď

Sluneční erupce

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

Geomagnetismus

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm tok	Ap
22 Jan 2014	150	010
23 Jan 2014	153	004
24 Jan 2014	153	003

Bulletin

Twelve sunspot groups were reported by Catania today. None of them was particularly active during the past 36 hours: only a couple of weak C-class flares occurred (below C3.0). We expect flaring activity on the C-level, in particular in two active regions with beta-gamma configuration of the photospheric magnetic field (Catania numbers 14 and 17, NOAA ARs 1957 and 1959 respectively). A partial halo CME was detected by SOHO/LASCO on January 21. The CME first appeared in the LASCO C2 field of view at 21:17 UT. It had the angular width of around 230 degrees and the speed around 900 km/s. Inspection of STEREO/EUVI B data indicates that the CME was associated with a far side eruption (as seen from the Earth) starting around 21:06 UT, with the source region situated around S15W150. This CME will therefore not arrive at the Earth and have no geomagnetic consequences. The Earth is currently inside the fast (around 550 km/s) solar wind stream originating in the low-latitude coronal hole in the northern hemisphere. The interplanetary magnetic field (IMF) magnitude in the interaction region between the fast stream and the preceding slow wind reached 13 nT, but the IMF Bz component was fluctuating between positive and negative values. As a consequence, geomagnetic conditions did not go above the unsettled level (K = 3) as measured by Dourbes, IZMIRAN, and NOAA. Currently the IMF magnitude is around 6 nT. We expect quiet to unsettled geomagnetic conditions (K < 4), with isolated intervals of active conditions (K = 4) possible but not very likely.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 113, na základě 16 stanic.

Solární indexy za 21 Jan 2014

Wolfovo číslo Catania	141
10cm sluneční tok	146
AK Chambon La Forêt	014
AK Wingst	008
Odhadovaný Ap	008
Odhadovaný mezinárodní počet slunečních skvrn	090 - Na základě 06 stanic

Souhrn významných událostí

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