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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Aug 09 1231 UTC

SIDC Forecast

Valid from 1230 UTC, 09 Aug 2017 until 11 Aug 2017
Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
09 Aug 2017071005
10 Aug 2017070008
11 Aug 2017069011

Bulletin

Over the past 24 hours solar activity has been very low. No significant flares have been recorded. Active Region (AR) 2670 (Mcintosh class:Hsx; Mag. type:Alpha) has been quiet. No Earth directed Coronal Mass Ejections (CMEs) have been detected. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares. The solar wind speed has varied between 400 to 450 km/s over the past 24 hours. The total magnetic field strength has remained around 5 nT. The Bz component fluctuated around 0 nT but was mainly positive, ranging between -5 and +5 nT. Geomagnetic conditions ranged between Kp index 1-2 (NOAA) and local K index 0-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet.

Today's estimated international sunspot number (ISN): 011, based on 17 stations.

Solar indices for 08 Aug 2017

Wolf number Catania///
10cm solar flux071
AK Chambon La Forêt007
AK Wingst006
Estimated Ap005
Estimated international sunspot number012 - Based on 26 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 X2026/03/30X1.5
Ultimo brillamento M2026/04/09M1.0
Ultima tempesta geomagnetica2026/04/03Kp7- (G3)
Giorni senza macchie
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Ultimo giorno senza macchie2026/02/24
Media mensile Numero di Macchie Solari
marzo 202685.9 +7.7
aprile 2026118.8 +32.8
Ultimi 30 giorni102.1 +47

Questo giorno nella storia*

Brillamenti solari
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DstG
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51995-68G1
*dal 1994

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