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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 Apr 29 1231 UTC

SIDC Forecast

Valid from 1230 UTC, 29 Apr 2018 until 01 May 2018
Brillamenti solari

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
29 Apr 2018070007
30 Apr 2018069007
01 May 2018069007

Bulletin

There are no active region on the disc. No C-class flares in past 24 h and the situation is not expected to change.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 h.

The solar wind speed at L1 is at 350 km /s with interplanetary magnetic field magnitude of 5 nT. Geomagnetic conditions are quiet and expected to remain so.

Today's estimated international sunspot number (ISN): 000, based on 12 stations.

Solar indices for 28 Apr 2018

Wolf number Catania///
10cm solar flux070
AK Chambon La Forêt005
AK Wingst004
Estimated Ap003
Estimated international sunspot number000 - Based on 25 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 X2025/12/08X1.1
Ultimo brillamento M2025/12/21M1.3
Ultima tempesta geomagnetica2025/12/21Kp5 (G1)
Giorni senza macchie
Ultimo giorno senza macchie2022/06/08
Media mensile Numero di Macchie Solari
novembre 202591.8 -22.8
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Questo giorno nella storia*

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