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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2026 Feb 22 1244 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Moderate (ISES: Major) magstorm expected (A>=50 or K=6)

Protoni solari

Quiet

	10cm flux	Ap
22 Feb 2026	109	007
23 Feb 2026	107	042
24 Feb 2026	107	022

Solar Active Regions and flaring

Solar flaring activity was low over the past 24 hours, with only C-class flares identified. The largest flare was a C2.2 flare peaking on Feb 22 at 06:33 UTC, which was produced by SIDC Sunspot Group 762 (NOAA Active Regions 4342, 4374). A total of 1 numbered sunspot groups were identified on the disk over the past 24 hours, and currently no sunspot on the disk. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares very likely.

Espulsioni di massa coronale

No Earth-directed coronal mass ejections (CMEs) were detected in the available coronagraph observations during last 24 hour.

Vento solare

Solar wind parameters were enhanced during the past 24 hours. The solar wind speed ranged between 441 km/s and 734 km/s. The interplanetary magnetic field ranged between 2 nT and 15 nT. The North- South component (Bz) ranged between -10 and 14 nT. This is possibly due to the early arrival of the high speed streams (HSSs) associated with the extension of the negative polarity, equatorial, recurrent coronal hole (SIDC Coronal Hole 147) which started to cross the central meridian since Feb 20. In the next 24 hours, enhanced solar wind conditions are possible with the further arrival of HSSs from the same coronal hole.

Geomagnetism

Geomagnetic conditions were globally at quiet to minor storm conditions (NOAA Kp 1 to 5). It was locally over Belgium at quiet to active conditions (K BEL 2 to 4). This is possibly due to the early arrival of the high speed streams (HSSs) associated with the extension of the negative polarity, equatorial, recurrent coronal hole (SIDC Coronal Hole 147) which started to cross the central meridian since Feb 20. Active to moderate storm conditions (k 4 to 6) are possible in the next 24 hours with the further arrival of HSSs from the same coronal hole.

Proton flux levels

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

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux, as measured by GOES-18 satellite, increased and exceeded the 1000 pfu threshold level from 20:00 UTC to 23:30 UTC on Feb 21 over the past 24 hours. It may exceed the threshold level again in the next 24 hours. The greater than 2 MeV electron flux, as measured by GOES-19 satellite, was below the 1000 pfu threshold level in the last 24 hours, and is expected to remain so. The 24h electron fluence was at normal levels and is expected to remain so in the coming 24 hours.

Today's estimated international sunspot number (ISN): 003, based on 08 stations.

Solar indices for 21 Feb 2026

Wolf number Catania	///
10cm solar flux	110
AK Chambon La Forêt	024
AK Wingst	018
Estimated Ap	018
Estimated international sunspot number	012 - Based on 17 stations

Noticeable events summary

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

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