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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Jul 28 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 28 Jul 2016 until 30 Jul 2016
Brillamenti solari

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

Geomagnetism

Minor storm expected (A>=30 or K=5)

Protoni solari

Quiet

10cm fluxAp
28 Jul 2016072025
29 Jul 2016073008
30 Jul 2016074007

Bulletin

Flaring activity has been very low, no C-class flares in past 24 h. There are two new active regions (no NOAA numbers yet), Catania 13 that emerged close to disk center and Catania 14 rotating over the east limb. They both have still a very simple magnetic field configuration, no large flares expected.

Unsettled to active geomagnetic conditions were registered in the past 24 h, due to the effect of a compression region ahead of the high speed stream expected for today. Solar wind speed is still low, at 390 km/s with interplanetary magnetic field magnitude of 5 nT. Minor storm conditions can be expected.

Today's estimated international sunspot number (ISN): 000, based on 17 stations.

Solar indices for 27 Jul 2016

Wolf number Catania000
10cm solar flux072
AK Chambon La Forêt012
AK Wingst004
Estimated Ap003
Estimated international sunspot number000 - Based on 33 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
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