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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2023 Aug 11 1242 UTC

SIDC Předpověď

Sluneční erupce

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

Geomagnetismus

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm tok	Ap
11 Aug 2023	156	007
12 Aug 2023	156	007
13 Aug 2023	156	007

Slunečně aktivní oblasti a vzplanutí

Solar flaring activity has been quite over the past 24 hours with few C-class flares. The larger flare was a C8.3-class flare produced by NOAA AR 3395 (Catania sunspot group 14) and was peaking at 06:45 UTC on August 11. The other region that showed some C-class flaring activity was the NOAA AR 3398 (Catania sunspot group 16). The other regions did not show any significant flaring activity. Solar flaring activity is expected to remain quite over the next 24 hours with a high probability of C-class flare and a very small chance of M-class flares.

Vyhazování koronální hmoty

No coronal mass ejection (CME) with an Earth- directed component was identified in the SOHO/LASCO-C2 coronagraph images over the past 24 hours.

Solární bouře

The solar wind parameters were mostly close to nominal levels over the past 24 hours. The total interplanetary magnetic field slightly increased around 16:00 UTC on August 10 reaching values around 9 nT and 10 nT. Few hours later, around 21:30 UTC the solar wind speed increase to about 550 km/s for about 2 hours before returning to slow wind speeds (ranging from 400 km/s to 490 km/s). This minor solar wind enhancement indicate the passage of a solar wind structure with an unclear source on the solar disc. The north-south component was fluctuating between -4.8 nT and 8.3 nT. The solar wind conditions are expected to remain as such for the next 24 hours.

Geomagnetismus

Geomagnetic conditions were mostly quiet with some short unsettled periods (NOAA Kp 1-3, K Belgium 1-3) over the past 24 hours. Mostly quiet conditions with possible short unsettled periods are expected for the next 24 hours.

Úrovně protonového toku

The greater than 10 MeV proton flux has now decreased and returned to nominal values. New proton event cannot be excluded due to the flaring activity, however, it is not very likely.

Elektronové toky na geostacionární oběžné dráze

The greater than 2 MeV electron flux was above the level of the 1000 pfu alert threshold for a short period, and is expected to remain below threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to remain so.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 113, na základě 20 stanic.

Solární indexy za 10 Aug 2023

Wolfovo číslo Catania	111
10cm sluneční tok	156
AK Chambon La Forêt	013
AK Wingst	010
Odhadovaný Ap	010
Odhadovaný mezinárodní počet slunečních skvrn	113 - Na základě 31 stanic

Souhrn významných událostí

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

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