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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2018 Mar 11 1234 UTC

SIDC Předpověď

Sluneční erupce

Quiet conditions (<50% probability of C-class flares)

Geomagnetismus

Active conditions expected (A>=20 or K=4)

Sluneční protony

Quiet

	10cm tok	Ap
11 Mar 2018	068	029
12 Mar 2018	068	011
13 Mar 2018	068	007

Bulletin

Solar X ray flux remained below B level and with no spotted regions on the visible disk chances for any flare occurrences remain very low.

No new Earth directed CMEs have been observed in coronagraph data.

Proton flux levels were at background values and are expected to remain so.

Solar wind showed until around midnight the continued passage of the magnetic cloud leaving the Sun on March 6. While Bz became positive and the magnetic field phi angle showed a further gentle rotation of the magnetic field, Solar wind speed declined to a minimum of 370 km/s by midnight. After midnight, Solar wind increased again to 450 km/s presently, while total magnetic field steadily recovered to a nominal 3nT with Bz variable and the magnetic field phi angle again stable in the positive sector. Further Solar wind perturbations may be encountered in the next 24 hours, with also possibly the arrival of the ejecta of March 7. Afterwards, Solar wind conditions should slowly return to nominal with later the influence of the high speed stream of the elongated coronal hole expected from March 14 onwards.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 1-3). Geomagnetic conditions could still see active periods associated to a possible weak CME arrival, but should mainly be quiet to unsettled from March 12 onwards.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 000, na základě 18 stanic.

Solární indexy za 10 Mar 2018

Wolfovo číslo Catania	///
10cm sluneční tok	068
AK Chambon La Forêt	012
AK Wingst	012
Odhadovaný Ap	013
Odhadovaný mezinárodní počet slunečních skvrn	000 - Na základě 19 stanic

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