Viewing archive of Monday, 9 February 2026

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2026 Feb 09 1253 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
09 Feb 2026	160	016
10 Feb 2026	156	017
11 Feb 2026	152	017

Solar Active Regions and flaring

Solar flaring activity was moderate over the past 24 hours, with 2 M-class flares identified. The largest flare was a M2.8 flare (SIDC Flare 6993) peaking on February 09 at 02:27 UTC, which was produced by SIDC Sunspot Group 784 (NOAA Active Region 4366). A total of 8 numbered sunspot groups were identified on the disk over the past 24 hours. SIDC Sunspot Group 784 (NOAA Active Region 4366) is the largest region on disk, the most magnetically complex (Beta-Gamma-Delta) and produced most of the flaring activity in the last 24 hours. This region is about to rotate over the western limb off the visible solar disk. Solar flaring activity is expected to be low over the next 24 hours, with C-class flares very likely and a chance for M-class flares.

Coronal mass ejections

No Earth directed CMEs were observed in the past 24 hours.

Coronal holes

SIDC Coronal Hole 137 (mid-latitude coronal hole with a negative polarity) first reached the central meridian on February 09 and is now positioned on the eastern side of the Sun. (Other crossing times : December 15, November 18)

Solar wind

The solar wind speed at Earth is around 420 km/s. The total interplanetary magnetic field ranged from 6 to 9 nT, with the Bz reaching a minimum of -7 nT. The phi-angle was mainly in the negative sector (directed towards the Sun), with periods in the positive sector. In the next 24 hours a slow solar wind regime is expected.

Geomagnetism

The geomagnetic conditions were quiet to unsettled globally and locally (Kp 1-3 & K BEL 1-3) in the last 24 hours. Quiet to unsettled conditions are expected in the next 24 hours.

Proton flux levels

The greater than 10 MeV GOES proton flux was at background levels and is expected to remain at background levels over the next 24 hours.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux, as measured by the GOES-19 satellite was above the 1000 pfu threshold at the start of the period until November at 20:30 UTC. The GOES-18 satellite was above the 1000 pfu threshold between 15:10 UTC and 01:45 UTC on November 08. The 2 MeV electron flux is expected to cross the threshold again during the next 24 hour. The 24-hour electron fluence was at normal levels and is expected to remain at normal levels over the next 24 hours.

Today's estimated international sunspot number (ISN): 120, based on 06 stations.

Solar indices for 08 Feb 2026

Wolf number Catania	///
10cm solar flux	167
AK Chambon La Forêt	012
AK Wingst	008
Estimated Ap	008
Estimated international sunspot number	151 - Based on 17 stations

Noticeable events summary

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

All times in UTC

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