Vaata esmaspäev, 5 juuni 2023 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2023 Jun 05 1231 UTC

SIDC Forecast

Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
05 Jun 2023169008
06 Jun 2023167008
07 Jun 2023167010

Solar Active Regions and flaring

The solar flaring activity was at low levels with several C-class flares being detected in the last 24 hours. The largest flare was a C5.8 flare, peaking at 14:52 UTC on June 4th, associated with NOAA AR 3327 (beta class). NOAA AR 3323 (beta-gamma class) is currently the largest and most complex active region on the visible solar disc but produced only few C-class flares in the last 24 hours. Low flaring activity was also produced by NOAA ARs 3320 (beta class). Other regions on the disc did not show any significant flaring activity. The solar flaring activity is expected to be at low to moderate levels over the next 24 hours with a small chance for isolated X-class flare.

Krooniaine massiline väljavool

A filament eruption occurred in the southwestern quadrant of the Sun from around 08:30 UTC on June 4th. The associated coronal mass ejection (CME) was observed in SoHO/LASCO C2 coronagraph data from 10:36 UTC on June 4th. The CME is directed to the south-west and the bulk of the CME is not expected to be Earth directed. However, a glancing blow of the shock may impact Earth in the late evening of June 07 or in the first half of June 08. In case of arrival, active geomagnetic conditions can be expected with possibly associated minor storm conditions. During the last 24 hours there were no other potentially Earth-directed CMEs detected in the available coronagraph observations.

Päikesetuul

Over the past 24 hours the solar wind parameters (ACE and DSCOVR) were slightly elevated. The interplanetary magnetic field reached a magnitude of 12nT at around 16:50UTC on June 04. The solar wind speed increased slowly from values about 330 km/s to 430 km/s. The southward component of the interplanetary magnetic field fluctuated between -11 nT and 6 nT. Similar conditions can be expected for the next 24 hours.

Geomagnetism

During last 24 hours the geomagnetic conditions were at quiet to active levels (NOAA KP 1-4 and Local K Dourbes 1-4). Geomagnetic conditions are expected at quiet to unsettled levels during next days.

Proton flux levels

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

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux was below the 1000 pfu threshold and is expected to remain below this threshold for the next days.The 24h electron fluence was at normal level. The electron fluence is expected to be at normal levels in the next days.

Today's estimated international sunspot number (ISN): 149, based on 20 stations.

Solar indices for 04 Jun 2023

Wolf number Catania///
10cm solar flux168
AK Chambon La Forêt017
AK Wingst012
Estimated Ap012
Estimated international sunspot number141 - Based on 29 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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