Vaata neljapäev, 10 august 2023 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2023 Aug 10 1231 UTC

SIDC ennustus

Päikesepursked ehk loited

C-class flares expected, (probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Proton event in progress (>10 MeV)

	10 cm vool	Ap
10 Aug 2023	150	007
11 Aug 2023	150	007
12 Aug 2023	150	007

Päikese aktiivsed piirkonnad ja pursked

Solar flaring activity has been quite over the past 24 hours with few C-class flares beside the high number of sunspots on the disc. The larger flare was a C5.5-class flare produced by NOAA AR 3398 (Catania sunspot group 16) and was peaking at 02:42 UTC on August 10. The other regions did not show 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 flare.

Krooniaine massiline väljavool

A halo coronal mass ejection (CME) was observed on August 09 at 16:12 UTC in SOHO/LASCO-C2. The SIDC Cactus Tool estimated an angular width of 350 degrees and median speed of 651 km/s on the coronagraph LASCO-C2 images. No source location is visible on the solar disc seen from Earth. It is believed to come from one of the very productive regions such as NOAA Active Region (AR) 3386 (Catania sunspot group 01) which is currently on the far side view. Therefore, due to the source location, no Earth-directed component of this CME is expected. No other CME with an Earth-directed component was identified in the SOHO/LASCO-C2 coronagraph images over the past 24 hours.

Päikesetuul

The general solar wind parameters were close to the background levels over the past 24 hours indicating a slow solar wind speed conditions. The solar wind speed was below 420 km/s. The total interplanetary magnetic field was below 6.8 nT . The north-south component was fluctuating between -5.0 nT and 2.6 nT. The solar wind conditions are expected to remain as such for the next 24 hours.

Geomagnetism

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.

Prootoni voo tasemed

The greater than 10 MeV proton flux started to rise at 21:46 UTC on August 07 and crossed the 10 MeV warning threshold at 01:10 UTC on August 08 as measured by GOES. This proton event was following the X1.5 class flare that was observed on August 07 peaking at 20:46 UTC. Since then the greater than 10 MeV proton flux remained above the 10 MeV warning threshold. It started to slowly decreased and it is expected to remain close to the threshold or just below in the next 12-24 hours before reaching the background level. New proton event cannot be excluded due to the flaring activity.

Elektronivoog geostatsionaarsel orbiidil

The greater than 2 MeV electron flux was below the 1000 pfu alert threshold, and is expected to remain at this level during the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 114, põhineb 22 jaamadel.

Päikese indeksid 09 Aug 2023

Catania Wolfi number	109
10cm päikesevoog	153
AK Chambon La Forêt	015
AK Wingst	009
Hinnanguline Ap	009
Hinnanguline rahvusvaheline päikeselaikude arv	105 - Põhineb 25 jaamal

Märkimisväärsete sündmuste kokkuvõte

Andmed on esitanud Päikeseinfektide Andmeanalüüsi Keskus (Solar Influences Data Analysis Center)© - SIDC - Töötleb SpaceWeatherLive

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