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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Apr 26 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 26 Apr 2016 until 28 Apr 2016
Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
26 Apr 2016082007
27 Apr 2016084007
28 Apr 2016086007

Bulletin

Solar activity is very low, only B-class flaring in past 24 h. A bipolar AR (Catania 64, no NOAA number) rotated into view slightly northeast of NOAA AR 2535 (Catania 63) and has produced most of the latest B-class flaring. C-class flares are possible as this region evolves in the coming hours. Geomagnetic conditions have ranged from quiet to unsettled in the past 24 h. The solar wind speed is at 500 km/s with interplanetary magnetic field magnitude around 4 nT. Quiet geomagnetic conditions are expected.

Today's estimated international sunspot number (ISN): 059, based on 17 stations.

Solar indices for 25 Apr 2016

Wolf number Catania///
10cm solar flux082
AK Chambon La Forêt008
AK Wingst005
Estimated Ap005
Estimated international sunspot number045 - Based on 22 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 M2026/03/26M4.0
Ultima tempesta geomagnetica2026/03/25Kp5+ (G1)
Giorni senza macchie
Ultimi 365 giorni3 giorni
20263 giorni (3%)
Ultimo giorno senza macchie2026/02/24
Media mensile Numero di Macchie Solari
febbraio 202678.2 -34.3
marzo 202681.4 +3.2
Ultimi 30 giorni81.4 +3.6

Questo giorno nella storia*

Brillamenti solari
12024X1.12
22025X1.1
32025X1.1
42024M9.7
52024M7.1
DstG
11959-176G3
21957-141G3
31984-105G3
42001-87G2
51976-78
*dal 1994

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