Vaata reede, 15 detsember 2017 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2017 Dec 15 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 15 Dec 2017 until 17 Dec 2017
Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
15 Dec 2017073011
16 Dec 2017074029
17 Dec 2017074019

Bulletin

The Sun produced no C flares in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at 5%. No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels. In the past 24 hours, solar wind speed measured by DSCOVR further decreased from about 420 to about 350 km/s. The Interplanetary Magnetic Field (IMF) was directed away from the Sun and its magnitude ranged between about 2 and 6 nT. Bz was never below -5 nT. A high speed stream from a recurrent positive equatorial coronal hole is expected to arrive in the second half of December 15 or early on December 16. Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 0 and 1) were registered in the past 24 hours. Active to minor storm conditions (K Dourbes 4 or 5) are possible on December 15, 16 and 17, with a slight chance for moderate geomagnetic storm intervals (K Dourbes = 6), due to the expected arrival of a high speed stream from a recurrent positive equatorial coronal hole.

Today's estimated international sunspot number (ISN): 000, based on 14 stations.

Solar indices for 14 Dec 2017

Wolf number Catania000
10cm solar flux072
AK Chambon La Forêt005
AK Wingst005
Estimated Ap004
Estimated international sunspot number000 - Based on 20 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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