Перегляд архіву середа, 2 травня 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2018 May 02 1230 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
02 May 2018	067	006
03 May 2018	067	007
04 May 2018	067	007

Bulletin

Solar activity was very low with a single minor B flare from the plage region turning around the West limb. There are no spotted regions on disk and X ray flux is expected to remain at background levels.

No Earth directed CME's were observed in coronagraph data.

Solar proton flux levels were at background values and are expected to remain so.

An equatorial negative polarity coronal hole is starting to transit the central meridian this afternoon. It is expected to influence solar wind conditions from May 6 onwards.

Solar wind saw a further steady decline of the velocity to values of under 400 km/s since after midnight. Total magnetic field remained between 4.5 and 6.5 nT with a variable Bz. Nominal Solar wind conditions are expected over the next days, until May 6 when the influence of the equatorial coronal hole is expected to increase solar wind conditions.

Geomagnetic conditions were quiet (local K Dourbes 1-2 and NOAA Kp 0-2) and are expected to remain quiet until May 6 when the influence of the equatorial coronal hole is expected to raise geomagnetic conditions to active levels.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 01 May 2018

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	006
AK Wingst	002
Estimated Ap	001
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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