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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 May 02 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 02 May 2018 until 04 May 2018
Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
02 May 2018067006
03 May 2018067007
04 May 2018067007

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 flux068
AK Chambon La Forêt006
AK Wingst002
Estimated Ap001
Estimated international sunspot number000 - Based on 32 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

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

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