Vaata teisipäev, 11 aprill 2017 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2017 Apr 11 1337 UTC

SIDC Forecast

Valid from 1230 UTC, 11 Apr 2017 until 13 Apr 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
11 Apr 2017075016
12 Apr 2017074012
13 Apr 2017075009

Bulletin

Solar activity was at very low levels during the period. Low-level B-class flaring was observed from a new active region at the east limb NOAA 2650 (B4.8, B1.6, B3.9, B1.3, B1.3). The filament eruption from the NE quadrant of the Sun is associated with a CME first observed in LASCO-C2 coronograph imagery at 23:28 UT 10 April. WSA/Enlil modeling determined a possible glancing blow from the CME, with arrival on 15 April. The greater than 10MeV proton flux was at nominal levels. Quiet flaring conditions are expected, with a chance on an isolated C-class flare. Solar wind parameters were at nominal levels. Solar wind speed was around 425 km/s. Bz fluctuated between -5.8 and +5.2 nT from 00UT today. A weak connection to an isolated, positive polarity coronal hole is expected to enhance the solar wind conditions slightly more today. The geomagnetic field was at quiet to active levels (Kp NOAA index: 1-4, K Dourbes index: 1-3). Geomagnetic conditions are expected to be quiet to active.

Today's estimated international sunspot number (ISN): 014, based on 25 stations.

Solar indices for 10 Apr 2017

Wolf number Catania///
10cm solar flux074
AK Chambon La Forêt008
AK Wingst005
Estimated Ap005
Estimated international sunspot number014 - Based on 31 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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