Vaata laupäev, 19 august 2023 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2023 Aug 19 1231 UTC

SIDC ennustus

Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

	10 cm vool	Ap
19 Aug 2023	150	014
20 Aug 2023	148	009
21 Aug 2023	146	006

Päikese aktiivsed piirkonnad ja pursked

The solar flaring activity was at low levels. The largest flare was an impulsive C5.8 flare peaking at 06:48 UTC on August 19, associated with NOAA AR3406. NOAA AR 3409 was also active, producing minor C-class flares. A new region rotated over the north-east limb, numbered NOAA AR3412. This and the remaining regions were mostly stable and quiet. The solar flaring activity is expected to be at low levels over the next 24 hours with C-class flares likely and a low chance for isolated M-class flares.

Krooniaine massiline väljavool

There were no Earth-directed Coronal Mass Ejections (CMEs) detected in the available coronagraph observations

Krooniauk

A small negative polarity coronal hole in the northern hemisphere began to traverse the central meridian on August 18.

Päikesetuul

The solar wind parameters reflected the ongoing weak negative polarity high speed stream influence. The interplanetary magnetic field decreased from 11nT to near 3nT. Bz had a minimum value of -7nT. The solar wind speed ranged between 450km/s and 530 km/s. The interplanetary magnetic field orientation was predominantly in the negative sector (field directed towards the Sun). The solar wind parameters are expected to remain enhanced on August 19, while the Earth remains under the influence for the high- speed stream, slowly returning to nominal conditions on August 20.

Geomagnetism

During last 24 hours the geomagnetic conditions were at quiet to unsettled levels globally (NOAA KP 1-3) with active intervals locally (K-Bel 1-3). Geomagnetic conditions are expected to be at unsettled levels, with active periods possible on August 19 due to the ongoing high speed stream influence.

Prootoni voo tasemed

Over the past 24 hours the greater than 10 MeV GOES proton flux was at nominal levels and is expected to remain so over the next days.

Elektronivoog geostatsionaarsel orbiidil

The greater than 2 MeV electron flux remained below the 1000 pfu threshold as measured by GOES 16. It is expected to remain below this threshold over the next days. The 24 hour electron fluence was at nominal levels. The electron fluence is expected to be at nominal levels for the next days.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 133, põhineb 09 jaamadel.

Päikese indeksid 18 Aug 2023

Catania Wolfi number	///
10cm päikesevoog	151
AK Chambon La Forêt	020
AK Wingst	012
Hinnanguline Ap	012
Hinnanguline rahvusvaheline päikeselaikude arv	125 - Põhineb 21 jaamal

Märkimisväärsete sündmuste kokkuvõte

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

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