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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Jul 29 1230 UTC

SIDC Forecast

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

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
29 Jul 2019067007
30 Jul 2019068007
31 Jul 2019068010

Bulletin

No active regions visible on the Sun. No flares observed, nor expected.

No Earth directed CMEs in past 24 h. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 375 km/s with interplanetary magnetic field magnitude of 3 nT. Quiet conditions have been observed in the past 24. Geomagnetic activity will remain quiet until the high speed solar wind from a negative polarity equatorial coronal hole arrives to the Earth on July 31 - August 1.

Today's estimated international sunspot number (ISN): 000, based on 19 stations.

Solar indices for 28 Jul 2019

Wolf number Catania///
10cm solar flux067
AK Chambon La Forêt010
AK Wingst006
Estimated Ap005
Estimated international sunspot number000 - Based on 17 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 X2026/02/04X4.21
Ultimo brillamento M2026/02/25M2.4
Ultima tempesta geomagnetica2026/02/22Kp5+ (G1)
Giorni senza macchie
Ultimi 365 giorni3 giorni
20263 giorni (5%)
Ultimo giorno senza macchie2026/02/24
Media mensile Numero di Macchie Solari
gennaio 2026112.6 -11.4
febbraio 202674.6 -38
Ultimi 30 giorni79 -41.8

Questo giorno nella storia*

Brillamenti solari
11999M9.44
22023M8.62
32002M3.28
42014M1.59
52011M1.57
DstG
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22014-94
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*dal 1994

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