Vaata neljapäev, 16 veebruar 2017 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2017 Feb 16 1231 UTC

SIDC Forecast

Valid from 1230 UTC, 16 Feb 2017 until 18 Feb 2017
Päikesepursked ehk loited

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Päikese prootonid

Quiet

10cm fluxAp
16 Feb 2017075011
17 Feb 2017075025
18 Feb 2017075012

Bulletin

In the past 24 hours, no C flares were observed. Very low solar activity (no C flares) is expected in the next 24 hours. Solar wind speed measured by DSCOVR was around 310 km/s until 6:25 UT on February 16, when it jumped to around 370 km/s, probably marking the arrival of a high speed stream from a positive coronal hole. Since then, solar wind speed has fluctuated between 370 and 430 km/s. The magnitude of the Interplanetary Magnetic Field (IMF) was around 3 nT until about 1:45 UT on February 16, when it started rising to values around 10 nT. Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 1 and 2) were registered in the past 24 hours. Due to the arrival of the high speed stream, quiet to active geomagnetic levels (K Dourbes < 5) are expected on February 16, 17 and 18, with possible minor storm episodes (K Dourbes = 5).

Today's estimated international sunspot number (ISN): 014, based on 21 stations.

Solar indices for 15 Feb 2017

Wolf number Catania///
10cm solar flux075
AK Chambon La Forêt006
AK Wingst002
Estimated Ap002
Estimated international sunspot number023 - Based on 26 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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