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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2023 Feb 11 1236 UTC

SIDC Předpověď

Sluneční erupce

M-class flares expected (probability >=50%)

Geomagnetismus

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

Sluneční protony

Warning condition (activity levels expected to increase, but no numeric forecast given)

	10cm tok	Ap
11 Feb 2023	215	013
12 Feb 2023	215	012
13 Feb 2023	215	007

Bulletin

The solar flaring activity stayed at moderate levels over the past 24 hours. A total of 25 flares have been reported, of which 7 were low M-class flares and 18 were C-class flares. The flaring originated from multiple regions including NOAA AR 3208, AR 3213, AR 3214, AR 3217, AR 3220 and AR 3222. The strongest flare was a M2.2 originating from NOAA AR 3208 which is rotating of the West solar limb. NOAA AR 3213 and NOAA AR 3217 show a complex photospheric magnetic field structure (beta-gamma/beta-delta and beta-gamma-delta respectively). We expect solar flaring activity to stay at moderate levels, with M-class flares expected and a small possibility of X-class flares. The flaring activity originating from the NOAA AR 3213, which is currently well-connected to the Earth, could be associated with a particle event.

During the last 24 hours there were no potentially Earth-directed coronal mass ejections detected in the available coronagraph observations.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours. Due to the moderate flaring activity it is possible that the greater than 10 MeV proton flux may exceed this threshold over the next 24 hours if there are further high energy flares and eruptions. The greater than 2 MeV electron flux has been below the 1000 pfu threshold and is expected to remain so. The 24h electron fluence was at nominal levels and is expected to remain so over the next 24 hours.

The solar wind speed has stayed constant over the last 24 hours with values varying from 480 to 520 km/s. The magnitude of the interplanetary magnetic field was about 5 nT, with a mainly southward component. We expect to see a decline in the solar wind speed as we return towards slow solar wind conditions in the next 24 hours.

During the last 24 hours, the geomagnetic conditions were unsettled (K-Bel=2-3 NOAA-Kp=2-4). Geomagnetic conditions are expected to be quiet to unsettled in the next days.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 181, na základě 07 stanic.

Solární indexy za 10 Feb 2023

Wolfovo číslo Catania	///
10cm sluneční tok	208
AK Chambon La Forêt	025
AK Wingst	018
Odhadovaný Ap	018
Odhadovaný mezinárodní počet slunečních skvrn	183 - Na základě 27 stanic

Souhrn významných událostí

Poskytuje Centrum pro analýzu dat o solárních vlivech© - SIDC - Zpracováno SpaceWeatherLive

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