Visualizzazione archivio di venerdì, 25 agosto AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Aug 25 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 25 Aug 2017 until 27 Aug 2017
Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
25 Aug 2017078005
26 Aug 2017077007
27 Aug 2017076007

Bulletin

Active Region (AR) 2672 (McIntosh class: Esi; Mag.type: Beta- Gamma) produced C5.5 flare peaking at 07:27 UT today. AR 2671 (McIntosh class: Fsi; Mag.type: Beta-Gamma) produced multiple B-class flares during the past 24 hours; the largest flare was B8.4 flare peaking at 15:58 UT yesterday. No Earth directed Coronal Mass Ejections (CMEs) have been detected in available coronagraph imagery. Solar activity is expected to be at C-class flaring level for the next three days. Solar wind parameters variations decayed over the past 24 hours. The solar wind speed decreased from 410 to 350 km/s. The total magnetic field strength remained below 5.5 nT. The Bz component fluctuated around 0 nT but was mainly positive, ranging between -3.5 and +4 nT. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 0-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be mostly quiet with some isolated episodes of Kp=3.

Today's estimated international sunspot number (ISN): 050, based on 24 stations.

Solar indices for 24 Aug 2017

Wolf number Catania050
10cm solar flux079
AK Chambon La Forêt010
AK Wingst010
Estimated Ap012
Estimated international sunspot number052 - Based on 29 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

Tutti gli orari in UTC

<< Vai alla pagina della panoramica giornaliera

Ultime notizie

Supporta SpaceWeatherLive.com!

Molte persone vengono su SpaceWeatherLive per seguire l'attività del Sole o sapere se ci sia la possibilità di vedere l'aurora, ma a maggior traffico corrispondono costi maggiori. Considerate una donazione se vi piace SpaceWeatherLive così che possiamo mantenere online il sito web!

Dona SpaceWeatherLive Pro
Supporta SpaceWeatherLive con il nostro merchandise
Dai un'occhiata al nostro merchandise

Notizie sul meteo spaziale

Ultimo brillamento X2025/03/28X1.1
Ultimo brillamento M2025/04/01M2.5
Ultima tempesta geomagnetica2025/03/27Kp5 (G1)
Giorni senza macchie
Ultimo giorno senza macchie2022/06/08
Media mensile Numero di Macchie Solari
marzo 2025134.2 -20.4
aprile 2025143 +8.8
Ultimi 30 giorni129.8 -16.3

Questo giorno nella storia*

Brillamenti solari
12002M8.82
21999M6.76
32001M2.91
42003M2.74
52001M2.31
DstG
11979-202G3
21988-133G3
31984-120G4
42004-117G2
51994-111G3
*dal 1994

Social networks