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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2024 Dec 01 1231 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
01 Dec 2024	203	006
02 Dec 2024	200	004
03 Dec 2024	197	003

Solar Active Regions and flaring

Solar flaring activity was low over the past 24 hours, with seven C-class flares identified. SIDC Sunspot Group 323 (NOAA Active Region [AR] 3906) produced four of the flares, while SIDC Sunspot Group 305 (NOAA Active Region 3912), SIDC Sunspot Group 324 (NOAA AR 3907), and SIDC Sunspot Group 326 (NOAA Active Region 3911) produced one flare each. M-class flaring activity is still expected, either from SIDC Sunspot Group 322 (NOAA AR 3905) or SIDC Sunspot Group 323 in the next 24 hours. A small chance of an X-class flare in the next 24 hours still exists.

Espulsioni di massa coronale

No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours.

Vento solare

The Solar Wind (SW) conditions were typical of the slow SW regime during the last 24 hours. The SW speed varied between from 340 km/h and 440 km/h in the last 24 hours. The total interplanetary magnetic field (Bt) ranged between 5 and 11 nT and its North-South component (Bz) registered values between -8 and 11 nT. The interplanetary magnetic field phi angle was predominately directed towards the Sun during the past 24 hours. During the next 24 hours the SW conditions are expected to be affected by a minor disturbance associated with the Coronal Hole (CH) crossing of the solar meridian on 28 Nov.

Geomagnetism

During the last 24 hours geomagnetic conditions were globally and locally quiet (NOAA Kp 1- to 2+ and K BEL 1 to 2). In the next 24 hours they are expected to be at quiet or unsettled levels both globally and locally.

Proton flux levels

The greater than 10 MeV proton flux, as measured by the GOES-18 satellite, was at nominal levels over the past 24 hours and is likely to remain so. However, there is still a small chance of a proton even in 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): 118, based on 16 stations.

Solar indices for 30 Nov 2024

Wolf number Catania	///
10cm solar flux	204
AK Chambon La Forêt	008
AK Wingst	012
Estimated Ap	011
Estimated international sunspot number	121 - Based on 22 stations

Noticeable events summary

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

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