Vaata neljapäev, 27 oktoober 2016 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2016 Oct 27 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 27 Oct 2016 until 29 Oct 2016
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
27 Oct 2016078026
28 Oct 2016077031
29 Oct 2016077013

Bulletin

Flaring activity remained well below the C-class level during the period. NOAA 2603 was stable, with another small sunspot region developing at N09W45. No earth-directed coronal mass ejections (CMEs) were observed.

Quiet flaring conditions are expected to continue, with a small chance on an isolated C-class flare.

Earth remained under the influence of the high speed stream (HSS) from the huge coronal hole (CH). Solar wind speed decreased from an initial 700 km/s to its current value just below 600 km/s. Bz varied between -5 and +4 nT, being mostly negative. The interplanetary magnetic field (IMF) was directed away from the Sun (positive). Kp ranged from unsettled conditions to moderate geomagnetic storming, while K Dourbes ranged from quiet conditions to minor storming.

Wind speeds are expected to remain above 500 km/s for probably another day, with periods of sustained negative Bz possible. Hence, quiet to minor storm conditions are expected, with still a small chance on an isolated moderate storming interval.

Today's estimated international sunspot number (ISN): 026, based on 14 stations.

Solar indices for 26 Oct 2016

Wolf number Catania034
10cm solar flux078
AK Chambon La Forêt072
AK Wingst044
Estimated Ap052
Estimated international sunspot number026 - Based on 27 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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