Visualizzazione archivio di sabato, 31 gennaio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Jan 31 1226 UTC

SIDC Forecast

Valid from 1230 UTC, 31 Jan 2015 until 02 Feb 2015
Brillamenti solari

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

Geomagnetism

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

Protoni solari

Quiet

10cm fluxAp
31 Jan 2015156014
01 Feb 2015152034
02 Feb 2015148019

Bulletin

Flaring activity declined with only a few low-level C-class flares, and the strongest event produced by NOAA 2277 at the beginning of the period (M2.4 peaking at 12:16UT). NOAA 2268 simplified significantly. NOAA 2277 kept most of its mixed magnetic polarity portions. No earth- directed CMEs have been observed. The x-ray background flux has decreased to the B6-level. The larger than 10 MeV flux is still enhanced, but started a gradual decline after 21:00UT. There remains a chance on an isolated M-class flare. Solar wind speed ranged mostly between 390 and 450 km/s. Bz varied between -7 and +7 nT, with a sustained negative period from 16:00 till 20:00UT. Unsettled to locally active (K Dourbes = 4) conditions were recorded between 18:00 and 24:00UT. The solar wind is expected to be further disturbed with the arrival of the HSS of the extension of a southern polar CH late on 31 January or on 01 February. The geomagnetic field is expected to range from quiet to active conditions, with a possibility of a minor geomagnetic storm.

Today's estimated international sunspot number (ISN): 102, based on 13 stations.

Solar indices for 30 Jan 2015

Wolf number Catania///
10cm solar flux159
AK Chambon La Forêt018
AK Wingst014
Estimated Ap012
Estimated international sunspot number115 - Based on 15 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
30121012161221----M2.41078/2277I/1

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 M2025/04/30M2.03
Ultima tempesta geomagnetica2025/05/02Kp5+ (G1)
Giorni senza macchie
Ultimo giorno senza macchie2022/06/08
Media mensile Numero di Macchie Solari
aprile 2025140.6 +6.4
maggio 202548.5 -92.1
Ultimi 30 giorni116.9 -13.6

Questo giorno nella storia*

Brillamenti solari
12024X1.6
22022X1.1
32013M8.19
42023M7.2
51999M6.41
DstG
11967-123G3
21978-114G3
31976-107G4
41994-79G2
51977-77G1
*dal 1994

Social networks