Visualizzazione archivio di giovedì, 19 novembre AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Nov 19 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 19 Nov 2015 until 21 Nov 2015
Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
19 Nov 2015109007
20 Nov 2015111007
21 Nov 2015113007

Bulletin

Solar activity was low with only a single C flare peaking at 20:09UT at C1.1 level from a region at the NE limb. Catania regions 77 and 78 (now marked separately NOAA 2454 and 2456 respectively) remained relatively simple and inactive. The new region that is turning over the NE limb, and responsible for yesterdays C flare, will come into view over the next days. A further occasional C flare can be expected. No Earth directed CMEs have been recorded in coronagraph data. Solar wind speed increased over the period under the combined influence of a negative polarity coronal hole and later the arrival of the shock related to the November 16 CME. Solar wind speed initially rose from around 370 km/s to 420 km/s with Bz stable in the 6-8nT range. At 19:23 UT a shock was observed in the solar wind with magnetic field increasing suddenly from 6 to 12.7nT and with associated minor jumps in solar wind speed (420 to 450 km/s) and density. The Bz field became pronounced negative for a while after the shock. Since then Solar wind speed was in the 420-500 km/s range with a generally decaying trend and meanwhile total magnetic field has fully recovered to values below 4 nT. Active to minor geomagnetic storm conditions (local K Dourbes 4 and NOAA Kp reaching 5 for one perid) were recorded in response to the negative Bz around midnight. Nominal solar wind conditions are expected to restore with associated quiet to unsettled geomagnetic conditions.

Today's estimated international sunspot number (ISN): 041, based on 07 stations.

Solar indices for 18 Nov 2015

Wolf number Catania039
10cm solar flux108
AK Chambon La Forêt030
AK Wingst019
Estimated Ap020
Estimated international sunspot number029 - Based on 26 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 geomagnetica2025/04/04Kp5+ (G1)
Giorni senza macchie
Ultimo giorno senza macchie2022/06/08
Media mensile Numero di Macchie Solari
marzo 2025134.2 -20.4
aprile 2025148 +13.8
Ultimi 30 giorni130.9 -15.2

Questo giorno nella storia*

Brillamenti solari
12001X1.21
22001M7.3
32001M4.52
42013M3.28
52004M2.47
DstG
11993-165G3
21968-112G3
31978-109G1
41984-108G2
51989-101G2
*dal 1994

Social networks