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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Jan 29 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 29 Jan 2019 until 31 Jan 2019
Brillamenti solari

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Protoni solari

Quiet

10cm fluxAp
29 Jan 2019076007
30 Jan 2019076011
31 Jan 2019076017

Bulletin

NOAA AR 2733 produced a C1.9 flare, at 10:34 UT. Solar activity is expected to remain at low levels with more C-class flares possible from NOAA AR 2733 (beta magnetic field configuration) as it rotates over the west limb.

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

The solar wind speed is at 360 km/s with interplanetary magnetic fields of 3 nT. Geomagnetic conditions have been quiet. The fast solar wind associated with a negative polarity equatorial coronal hole is expected to arrive to the Earth within 48 hours, causing disturbed conditions (with k values possibly reaching up to 5). Quiet conditions are expected until then.

Today's estimated international sunspot number (ISN): 014, based on 19 stations.

Solar indices for 28 Jan 2019

Wolf number Catania019
10cm solar flux076
AK Chambon La Forêt004
AK Wingst001
Estimated Ap001
Estimated international sunspot number018 - Based on 28 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 M2025/12/31M7.11
Ultima tempesta geomagnetica2026/01/02Kp5 (G1)
Giorni senza macchie
Ultimo giorno senza macchie2022/06/08
Media mensile Numero di Macchie Solari
dicembre 2025124 +32.2
gennaio 2026110 -14
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