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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2024 Apr 06 1231 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
06 Apr 2024121007
07 Apr 2024121007
08 Apr 2024121007

Solar Active Regions and flaring

The solar flaring activity was low over the past 24 hours. The large flare was a C2.0 observed from the active region NOAA 3630. 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.

Espulsioni di massa coronale

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

Fori coronali

A small negative polarity equatorial coronal hole has crossed the central meridian on April 05.

Vento solare

The solar wind conditions undergo mild influence of the high- speed stream from the negative polarity equatorial coronal hole (that crossed the central meridian on April 01). 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 reached values around 9.5 nT and the Bz component reached values up to -7.6 nT. The high-speed stream associated to the small negative polarity equatorial coronal hole may contribute to the solar wind enhancement in the next day. The solar wind conditions are expected to remain slightly enhanced on April 06 and April 07.

Geomagnetism

Geomagnetic conditions were unsettled (NOAA Kp 2-3 and Local K Bel 1-2) in response of the high-speed stream from the negative polarity equatorial coronal hole (that crossed the central meridian on April 01). Geomagnetic conditions are expected to be at unsettled conditions on April 06 and 07.

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): 081, based on 14 stations.

Solar indices for 05 Apr 2024

Wolf number Catania108
10cm solar flux121
AK Chambon La Forêt019
AK Wingst011
Estimated Ap011
Estimated international sunspot number080 - Based on 22 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

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

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Notizie sul meteo spaziale

Ultimo brillamento X2025/03/28X1.1
Ultimo brillamento M2025/04/01M2.5
Ultima tempesta geomagnetica2025/03/27Kp5 (G1)
Giorni senza macchie
Ultimo giorno senza macchie2022/06/08
Media mensile Numero di Macchie Solari
marzo 2025134.2 -20.4
aprile 2025143 +8.8
Ultimi 30 giorni130.4 -16.1

Questo giorno nella storia*

Brillamenti solari
12002M8.82
21999M6.76
32001M2.91
42003M2.74
52001M2.31
DstG
11979-202G3
21988-133G3
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*dal 1994

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