Vaata reede, 17 juuni 2016 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2016 Jun 17 1230 UTC

SIDC Forecast

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

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
17 Jun 2016087013
18 Jun 2016087007
19 Jun 2016087007

Bulletin

Solar flaring activity was very low with X-ray flux remaining below C level. Catania group 94 (NOAA 2555) showed signs of some flux emergence and produced the biggest flare of the period, a B8.8 flare peaking at 13:24 UT. All regions on disk are fairly simple and stable and X-ray flux is expected to remain below C level. A partial halo CME can be seen in SoHO/LASCO C2 images from around 8:00UT June 16. The bulk of the mass is expelled in Eastern direction as seen from the Earth and the angular extent exceeds 180 degrees (Cactus has underestimated the angular width). Stereo A data show that the event is backsided and hence will not be geoeffective. No Earth directed CMEs have been observed in coronagraph data. Solar wind speed was fairy stable in the 480-550 km/s range and generally decreasing until around 5:30UT when it jumped to values of around 570 km/s and remains increasing with current values around 630 km/s. Total magnetic field was increasing to around 6.5-7nT without any extended periods of negative Bz. The phi angle was stable in the positive sector. After the current increase in solar wind speed solar wind conditions are expected to gradually recover to nominal. Geomagnetic conditions were quiet to unsettled (NOAA Kp 1-2 and local K Dourbes 1-3). Geomagnetic conditions are expected to remain quiet to unsettled with some active periods possible given the current elevated solar wind speed.

Today's estimated international sunspot number (ISN): 038, based on 14 stations.

Solar indices for 16 Jun 2016

Wolf number Catania040
10cm solar flux088
AK Chambon La Forêt012
AK Wingst011
Estimated Ap009
Estimated international sunspot number031 - Based on 25 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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