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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2023 Apr 05 1231 UTC

SIDC Předpověď

Sluneční erupce

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

Geomagnetismus

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm tok	Ap
05 Apr 2023	135	011
06 Apr 2023	133	008
07 Apr 2023	130	005

Bulletin

Despite the presence of the complex NOAA AR 3270 on the visible side of the solar disc (classified yesterday as the beta-gamma-delta region), the solar flaring activity was during last 24 hours very low with only few B-class and low C-class flares reported. The NOAA AR 3270 shows decrease in complexity and it has now beta-gamma configuration of the photospheric magnetic field. We expect a low level of flaring activity to persist in the coming hours with C-class flares, while isolated M-class flares are possible but not very probable.

During last 24 hours there were no potentially Earth-directed CMEs detected in the coronagraph observations.

The greater than 10 MeV proton flux remained at the background levels, and the greater than 2 MeV electron flux was fluctuating around the 1000 pfu threshold, we expect both of these parameters will stay on the similar level in the coming hours. The 24h electron fluence is still at moderate to normal level, and we expect it to decrease to the normal level until tomorrow.

Earth is still withing the rather fast solar wind. During last 48 hours the solar wind velocity was fluctuating between about 530 and 490 km/s, with the present value around 480 km/s. The interplanetary magnetic field magnitude is around 5 nT.

During last 24 hours the geomagnetic conditions were quiet to unsettled (NOAA reported Kp=3+ this morning). We expect such a geomagnetic conditions to persist in the coming hours.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 059, na základě 16 stanic.

Solární indexy za 04 Apr 2023

Wolfovo číslo Catania	082
10cm sluneční tok	136
AK Chambon La Forêt	015
AK Wingst	014
Odhadovaný Ap	013
Odhadovaný mezinárodní počet slunečních skvrn	069 - Na základě 25 stanic

Souhrn významných událostí

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

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