Vaata laupäev, 9 detsember 2017 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2017 Dec 09 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 09 Dec 2017 until 11 Dec 2017
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
09 Dec 2017068003
10 Dec 2017066004
11 Dec 2017068037

Bulletin

The solar activity remained quiet over the past 24 hours. The visible solar disc is spotless and no flare has been recorded. Quiet flaring conditions are expected for the next 24-hour period.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The solar wind speed has continued to gradually decrease from 460 km/s to 380 km/s. The interplanetary magnetic field magnitude remained below 6 nT, and the Bz component fluctuated between -3 and 3 nT. The solar wind speed is expected to decline further to reach the nominal conditions. Enhancements of the solar wind conditions are expected when the high speed solar wind stream associated with the coronal hole (that transited the central meridian on Dec, 8) reaches Earth by Dec 11.

The geomagnetic conditions were quiet with K-Dourbes and Kp ranging between 1 and 2. The geomagnetic activity is expected to be quiet for the next following days until the arrival of the high speed stream on Dec 11.

Today's estimated international sunspot number (ISN): 000, based on 13 stations.

Solar indices for 08 Dec 2017

Wolf number Catania///
10cm solar flux070
AK Chambon La Forêt008
AK Wingst006
Estimated Ap004
Estimated international sunspot number000 - Based on 22 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

Kõik ajad UTC-s

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