Visualizzazione archivio di martedì, 5 ottobre AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2021 Oct 05 1231 UTC

SIDC Forecast

Valid from 1230 UTC, 05 Oct 2021 until 07 Oct 2021
Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
05 Oct 2021081004
06 Oct 2021080004
07 Oct 2021079007

Bulletin

The solar activity was quiet over the past 24 hours, with the X-ray flux below C-level. The sunspot groups (Catania sunspot group 54, NOAA 2880) continued to decay and did not show any significant flaring activities. The returning sunspot groups (Catania sunspot group 58, NOAA 2882) remained unipolar with a magnetic field configuration Alpha and did not show any significant flaring activities. The solar activity is expected to remain at low levels over the next 24 hours with a very small chance of C-class flare.

No Earth directed Coronal Mass Ejection (CME) has been observed in the available coronagraph imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux was below the 1000 pfu and at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron fluence was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

The Earth is currently inside a slow solar wind speed regime. Over the past 24 hours, the solar wind parameters (as observed by ACE and DSCOVR) showed an ambient background solar wind flow: The solar wind speed ranged from 280 km/s to 350 km/s. The interplanetary magnetic field magnitude was below 4.0 nT with its Bz components fluctuating between -3.3 nT and 0.9 nT. Nominal solar wind regime is expected to persist in the next 24 hours.

The geomagnetic conditions were quiet to unsettled over the past 24 hours: Values of K-Dourbes and NOAA-Kp index between 1 and 3 were registered. Mostly quiet conditions with occasionally Unsettled conditions are expected as long as the Earth remains in slow solar wind speed regime.

Today's estimated international sunspot number (ISN): 029, based on 16 stations.

Solar indices for 04 Oct 2021

Wolf number Catania029
10cm solar flux084
AK Chambon La Forêt011
AK Wingst006
Estimated Ap006
Estimated international sunspot number031 - Based on 31 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