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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2022 Dec 23 1259 UTC

SIDC Forecast

Valid from 1230 UTC, 23 Dec 2022 until 25 Dec 2022
Brillamenti solari

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

Geomagnetism

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

Protoni solari

Quiet

10cm fluxAp
23 Dec 2022131016
24 Dec 2022131015
25 Dec 2022131008

Bulletin

The solar flaring activity was at low levels with several small C-class flares. The flaring activity over the next 24 hours is expected to remain mostly at low levels, with C-class flares expected and a very small possibility for M-class flares.

Several coronal mass ejections and flows were observed in the currently available SOHO/LASCO coronagraph imagery and automatically detected by the Cactus tool over the past 24 hours. However, no clear Earth-directed coronal mass ejections were identified.

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 24 hours. The greater than 2 MeV electron flux was below the 1000 pfu threshold over the past 24 hours and is expected to remain below the 1000 pfu threshold over the next 24 hours. The electron fluence was at normal to low levels and is expected to stay at normal levels over the next 24 hours.

The solar wind parameters are enhanced due to the arrival of the high-speed stream associated to the equatorial coronal holes (positive polarity) reaching to the central meridian of the Sun on December 20. The solar wind speed reached values of 545 km/s, the total interplanetary magnetic field remained slightly enhanced and reached values up to 10.0 nT with the southward interplanetary magnetic component, Bz, ranging between -9.7 nT and 8.8 nT.

During the last 24 hours, the geomagnetic conditions were active (NOAA- Kp=2-4, and K-BEL=1-4) in response to the enhanced solar wind condition. Geomagnetic conditions are expected to remain unsettled with periods of active conditions in the next days.

Today's estimated international sunspot number (ISN): 085, based on 06 stations.

Solar indices for 22 Dec 2022

Wolf number Catania130
10cm solar flux131
AK Chambon La Forêt024
AK Wingst015
Estimated Ap014
Estimated international sunspot number102 - Based on 15 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

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

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