Vaata kolmapäev, 17 veebruar 2016 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2016 Feb 17 1231 UTC

SIDC Forecast

Valid from 1230 UTC, 17 Feb 2016 until 19 Feb 2016
Päikesepursked ehk loited

M-class flares expected (probability >=50%)

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
17 Feb 2016105021
18 Feb 2016105022
19 Feb 2016105007

Bulletin

Sixteen C flares were released by NOAA AR 2497 in the past 24 hours. The brightest flare was a C9.4 flare which peaked at 5:01 UT on February 17. M flares (probability 50%) and C flares (probability 95%) are possible within the next 24 hours, especially from AR 2497. In the past 24 hours, the solar wind speed measured by ACE has increased from about 510 km/s towards a maximum of about 670 km/s around 20:30 UT on February 16. The magnitude of the Interplanetary Magnetic Field has gradually decreased from 15 nT to current values of about 8 nT. This is consistent with the arrival of the anticipated coronal hole high speed stream. Since 10h UT, the solar wind speed has decreased again to current values near 530 nT. Over the past 24 hours, quiet to minor geomagnetic storm levels were registered (K Dourbes between 2 and 5; NOAA Kp between 3 and 6), as a combined effect of the interface region of the high speed stream and southward excursions of the Interplanetary Magnetic Field. Active geomagnetic conditions (K Dourbes = 4) are possible on February 17 and 18 under the influence of the high speed stream. Quiet to unsettled levels are expected on February 19.

Today's estimated international sunspot number (ISN): 039, based on 14 stations.

Solar indices for 16 Feb 2016

Wolf number Catania///
10cm solar flux104
AK Chambon La Forêt063
AK Wingst042
Estimated Ap045
Estimated international sunspot number043 - 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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