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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2024 Nov 24 1239 UTC

SIDC Forecast

Brillamenti solari

M-class flares expected (probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
24 Nov 2024	215	008
25 Nov 2024	228	008
26 Nov 2024	240	008

Solar Active Regions and flaring

Solar flaring activity was moderate over the past 24 hours with 2 M-class flares being recorded. The first M-class flare was an M1.1 flare (SIDC Flare 2692) peaking on November 23 at 16:07 UTC, which was produced by SIDC Sunspot Group 298 (NOAA Active Region 3901) near the central meridian. The second M1.1 flare (SIDC Flare 2702) originated near the north-east limb and was likely produced by the returning region SIDC Sunspot Group 217 (NOAA Active Region 3908). SIDC Sunspot Group 323 (NOAA Active Region 3906) and SIDC Sunspot Group 322 (NOAA Active Region 3905) are the two largest regions on disk and produced multiple C-class flares. SIDC Sunspot Group 318 (NOAA Active Region 3898) also produced a C-class flaring and the remaining regions were quiet. The solar flaring activity is expected to be moderate over the next 24 hours, with C-class flares expected, M-class flares likely and a chance for X-class flares.

Espulsioni di massa coronale

No Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery over the past 24 hours.

Vento solare

Over the past 24 hours the interplanetary magnetic field ranged between 6 and 8 nT, with a minimum Bz of -6 nT. The solar wind speed increased slightly with values between 370 km/s and 450 km/s. The interplanetary magnetic field phi angle was mostly in the negative sector (directed towards the Sun). The solar wind speed may be slightly elevated over the next 24 hours due to the possible high-speed stream influence, associated with SIDC Coronal Hole 80, which began to cross the central meridian on November 20.

Geomagnetism

The geomagnetic conditions over the past 24 hours were quiet to unsettled. Generally quiet to unsettled geomagnetic conditions are expected for the next 24 hours, with possible isolated active conditions due to any high-speed stream influence.

Proton flux levels

The greater than 10 MeV GOES proton flux was below the 10 pfu threshold and is expected to remain so over the next 24 hours.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux as measured by GOES 18 was below the 1000 pfu threshold and is expected to remain below this threshold over the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so in the next 24 hours.

Today's estimated international sunspot number (ISN): 159, based on 11 stations.

Solar indices for 23 Nov 2024

Wolf number Catania	///
10cm solar flux	200
AK Chambon La Forêt	012
AK Wingst	010
Estimated Ap	008
Estimated international sunspot number	146 - Based on 08 stations

Noticeable events summary

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

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