Prohlížíte si archiv úterý 23. září 2014

Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2014 Sep 23 1239 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
23 Sep 2014	134	012
24 Sep 2014	138	013
25 Sep 2014	142	012

Bulletin

Solar activity has been very low with only a single notable C flare peaking at 19:51 UT at C1.6 level and originating from NOAA AR 2172. Background X-ray radiation has steadily increased to the C level. All 6 active regions on disc appear stable with NOAA AR 2172 the most significant potential flaring source. C flares should be expected with a chance for an M-flare especially from this region. The slightly enhanced proton levels (below the event threshold) observed yesterday have meanwhile settled to almost nominal values. An at least partial halo CME was recorded in SOHO/LASCO C2 data starting at around 7:36 UT. Analysis is ongoing regarding its source and potential impact, but first analysis seems to point to a source on the far side similar to the second CME observed yesterday. Solar wind speed has been stable, mainly within the 400-460 km/s range. Total magnetic field has slightly increased from between 5-6 nT to between 6-7 nT with Bz variable but now predominantly negative up to -6nT. Geomagnetic conditions were quiet to unsettled (both NOAA Kp and local K Dourbes 2-3). Later today we may see the arrival of a coronal hole high speed stream likely to last over the coming days. Associated enhanced geomagnetic activity (periods of active conditions) is possible.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 089, na základě 16 stanic.

Solární indexy za 22 Sep 2014

Wolfovo číslo Catania	///
10cm sluneční tok	130
AK Chambon La Forêt	016
AK Wingst	010
Odhadovaný Ap	009
Odhadovaný mezinárodní počet slunečních skvrn	068 - Na základě 23 stanic

Souhrn významných událostí

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