Prohlížíte si archiv středa 19. července 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2017 Jul 19 1230 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
19 Jul 2017	075	005
20 Jul 2017	073	016
21 Jul 2017	072	016

Bulletin

As NOAA active region 2665 was disappearing behind the West limb it produced a final C2.8 flare peaking at 00:06UT. There are currently no spotted regions on disk and chances for C flares are very low. No Earth directed CMEs have been observed in coronagraph data. Proton flux levels are at background values and expected to remain so.

Solar wind has meanwhile declined to speeds of around 440 km/s. The large values of yesterday appear to have been observation errors. Total magnetic field is at low background values of around 2nT. Some perturbations in the solar wind conditions may occur over the next days, due to sector boundary crossings and the possible influence of the extension of the northern polar coronal hole. Geomagnetic conditions were quiet (local K Dourbes and NOAA Kp 0-2). Geomagnetic conditions are expected to become quiet to unsettled with an isolated active period possible as some minor perturbations in the solar wind could occur over the next days.

Today's estimated international sunspot number (ISN): 000, based on 27 stations.

Solar indices for 18 Jul 2017

Wolf number Catania	012
10cm solar flux	078
AK Chambon La Forêt	008
AK Wingst	008
Estimated Ap	007
Estimated international sunspot number	000 - Based on 32 stations

Noticeable events summary

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

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