Viewing archive of Sunday, 7 April 2024

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2024 Apr 07 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
07 Apr 2024	124	007
08 Apr 2024	124	007
09 Apr 2024	124	007

Solar Active Regions and flaring

The solar flaring activity was very low over the past 24 hours. The X-ray flux is at B-class levels. Few sunspots groups are visible on the disc. However they remain quiet. The solar flaring activity is expected to be at low levels over the next 24 hours, with possible C-class flares.

Coronal mass ejections

No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery.

Coronal holes

A small positive polarity high-latitude south coronal hole is crossing the central meridian on April 07.

Solar wind

The solar wind conditions underwent very mild influence of the high-speed stream from the negative polarity equatorial coronal hole (that crossed the central meridian on April 01). The conditions are now returning to the slow solar wind regime. The interplanetary magnetic field phi is in the negative sector (directed towards the Sun). The solar wind speed ranging between 400 km/s and 500 km/s. The total interplanetary magnetic field was below 6.5 nT and the Bz component fluctuated between -4.7 nT and 5.5 nT. The solar wind conditions are expected to continue its return to the slow solar wind regime on April 07 and April 08.

Geomagnetism

Geomagnetic conditions were quiet (NOAA Kp 1-2 and Local K Bel 1-2) and expected to remain quiet on April 07 and 08.

Proton flux levels

Over the past 24 hours, the greater than 10 MeV GOES proton flux was below the 10 pfu threshold and is expected to remain below this threshold for the next 24 hours.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux remained below the 1000 pfu threshold as measured by GOES 16. It is expected to remain below this threshold over the next days. The 24-hour electron fluence was at nominal levels. The electron fluence is expected to be at nominal levels over the next day.

Today's estimated international sunspot number (ISN): 085, based on 12 stations.

Solar indices for 06 Apr 2024

Wolf number Catania	///
10cm solar flux	123
AK Chambon La Forêt	010
AK Wingst	012
Estimated Ap	011
Estimated international sunspot number	076 - Based on 23 stations

Noticeable events summary

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

All times in UTC

<< Go to daily overview page