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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2024 Mar 10 1302 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
10 Mar 2024	136	007
11 Mar 2024	137	008
12 Mar 2024	138	016

Solar Active Regions and flaring

The solar flaring activity was at moderate level during the last 24 hours, with very few C-class flares and a M-class flare. The strongest reported flare was GOES M7.4 flare which peaked at 12:13 UTC today. During the flare, the source region (AR 3599) of the flare had beta-gamma-delta configuration of its photospheric magnetic field. The solar flaring activity is expected to be at low to moderate levels over the next 24 hours with several C-class flares, and a chance for M-class flares.

Espulsioni di massa coronale

A partial halo coronal mass ejection (CME), first observed in LASCO-C2 images at 22:36 UTC on Mar 09, was associated with a prominence eruption from the close to, and partially behind the NE-limb region. The CME had a projected speed of 1200 km/s and width of about 200 degrees. Due to the CME source region situated close to the solar limb and its main propagation direction strongly towards North East from the Sun- Earth line, only a glancing blow from the CME-driven shock wave could be expected at Earth. Another prominence eruption was observed in NW quadrant of the Sun around 10:00 UTC today. Associated coronal dimming and the EUV indicate the presence of the associated CME that could be possibly Earth directed. More will be reported when the coronagraph data become available. No other Earth-directed CMEs were detected in the available coronagraph observations during last 24 hour.

Fori coronali

A equatorial (positive polarity) coronal hole, spanning 5 N - 20 S, has approached the central meridian on Mar 10. The solar wind from this coronal hole may enhance the solar wind environment near Earth on Mar 13.

Vento solare

Solar wind conditions have transitioned from fast to slow solar wind regime. The solar wind speed has decreased from 480 km/s to 400 km/s. The North-South component (Bz) ranged between -5 and 4 nT. The interplanetary magnetic field ranged from 1 nT to 5 nT. Slow solar wind conditions may be expected to continue over the next 24 hours.

Geomagnetism

Geomagnetic conditions were globally and locally at quiet to unsettled conditions (NOAA Kp and K BEL 1 to 3). Quiet to unsettled conditions are expected in the next 24 hours.

Proton flux levels

The greater than 10 MeV proton flux was below the threshold level over the past 24 hours and 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 the GOES-16 satellite, was just below the threshold level in the last 24 hours. It increased probably due to enhanced solar wind conditions in last days but remained below the 1000 pfu alert threshold level. It may increase and cross the threshold during the next 24 hours. The 24h electron fluence was at normal level and is expected to remain so.

Today's estimated international sunspot number (ISN): 079, based on 04 stations.

Solar indices for 09 Mar 2024

Wolf number Catania	///
10cm solar flux	135
AK Chambon La Forêt	014
AK Wingst	014
Estimated Ap	014
Estimated international sunspot number	095 - Based on 19 stations

Noticeable events summary

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

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