Vaata reede, 7 oktoober 2022 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2022 Oct 07 1239 UTC

SIDC Forecast

Valid from 1230 UTC, 07 Oct 2022 until 09 Oct 2022
Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
07 Oct 2022156016
08 Oct 2022156017
09 Oct 2022156017

Bulletin

Solar flaring activity was at quiet levels with low C-class flares (below C3-class) produced by Catania sunspot group 48 (NOAA AR 3110, beta), Catania sunspots group 55 (NOAA AR 3112) and Catania sunspots group 56 (NOAA AR 3116). The solar flaring activity is expected to remain quiet to moderated levels with C-class flare and possible isolated M-class flare.

No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph imagery over the past 24 hours.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain so in the next days. The greater than 2 MeV electron flux was below the 1000 pfu threshold and it is expected to be below the threshold in the next 24 hours. The 24h electron fluence was at moderate levels and is expected to be at nominal levels in the next 24 hours.

Solar wind parameters were slightly elevated due to the influence of the high-speed streams coming from coronal holes (positive polarity). The solar wind speed values were between 450 km/s and 540 km/s. The interplanetary magnetic field magnitude ranged between 3.4 nT and 7.8 nT. The southward component of the interplanetary magnetic field fluctuated between -6.5 nT and 6.1 nT being mainly negative. The magnetic field phi angle was mostly in the positive sector (field directed away from the Sun). Last October 05, a small equatorial coronal hole (positive magnetic polarity) was facing Earth. The high-speed stream from this corona hole is expected to reach Earth on October 07-08. The solar wind conditions are expected to be enhanced due to the combination of the possible arrival of glancing blow of Interplanetary Coronal Mass Ejection from the filament eruption observed on October 05, and the high-speed streams from the corona hole (positive magnetic polarity).

Geomagnetic conditions were unsettled to active (NOAA Kp 1-4, local K-Dourbes 1-4) due to the prolonged periods of the southward component of the interplanetary magnetic being negative. Geomagnetic conditions are expected to be at unsettled conditions with possible periods of active conditions for the next days due to the expected solar wind enhancements.

Today's estimated international sunspot number (ISN): 159, based on 21 stations.

Solar indices for 06 Oct 2022

Wolf number Catania///
10cm solar flux156
AK Chambon La Forêt032
AK Wingst020
Estimated Ap020
Estimated international sunspot number148 - 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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