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Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2025 Mar 03 1254 UTC

SIDC Forecast

Солнечные вспышки

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

Geomagnetism

Quiet (A<20 and K<4)

Солнечные протоны

Quiet

	10cm flux	Ap
03 Mar 2025	140	006
04 Mar 2025	135	004
05 Mar 2025	130	007

Solar Active Regions and flaring

Solar flaring activity was low over the past 24 hours, with only C-class flares identified. SIDC Sunspot Group 416 (NOAA Active Region [AR] 4007, at S10W31, Beta magnetic configuration) produced more of the C-class flaring activity, including the two brightest flares of C2 magnitude. The rest of the C-class flaring activity (at C1 level) was produced by SIDC Sunspot Group 368 (NOAA AR 4006, at N19W35, Beta magnetic configuration) and SIDC Sunspot Group 423 (NOAA AR 4012, at S13E61, Beta magnetic configuration). More C-class flaring activity is expected in the next 24 hours, mostly from SIDC Sunspot Groups 416, 423, and 424 (NOAA AR 4011, at S19E44, Beta magnetic configuration).

Выбросы корональной массы

No Earth-directed Coronal Mass Ejections (CME) were observed in the last 24 hours. A CME seen in LASCO-C2 images as launched on 2 Mar at 10:24 UTC is a back-sided event and not expected to reach Earth.

Солнечный ветер

The Solar Wind (SW) conditions gradually turned to a typical slow SW regime during the last 24 hours. The SW speed gradually dropped from 550 to 430 km/s, while the total interplanetary magnetic field (Bt) gradually increased from approximately 5 to 9 nT in the last 24 hours. Its North-South component (Bz) registered values between -5 and 8 nT during the same period. The SW conditions are expected to remain typical of the slow SW over the next 24 hours.

Geomagnetism

During the last 24 hours geomagnetic conditions were globally quiet (NOAA Kp 1- to 2-), while locally they were quiet with a very brief period of unsettled conditions (K BEL 2 to 3). In the next 24 hours the geomagnetic conditions are expected to remain quiet 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 in the next 24 hours.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux, as measured by GOES 18, crossed the 1000 pfu threshold level on 2 Mar at 16:40 UTC and remained above this level until 3 Mar at 00:05 UTC. It is expected to continue to fluctuate around this threshold in the next 24 hours. The 24h electron fluence increased over the past 24 hours but remained at normal levels. It is expected to slightly decrease in the next 24 hours, hence still remain at normal levels.

Today's estimated international sunspot number (ISN): 122, based on 18 stations.

Solar indices for 02 Mar 2025

Wolf number Catania	///
10cm solar flux	140
AK Chambon La Forêt	007
AK Wingst	005
Estimated Ap	005
Estimated international sunspot number	154 - Based on 22 stations

Noticeable events summary

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

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