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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2017 Oct 29 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
29 Oct 2017	075	005
30 Oct 2017	074	007
31 Oct 2017	073	007

Bulletin

Quiet solar conditions were reported with the X-ray flux touching only briefly into the B level. Both active regions on disk are relatively simple (Mag.Type: Alpha) and quiet. The X-ray flux is expected to remain below C level. Proton flux levels were at background values and are expected to remain so. No Earth directed CME's were recorded in coronagraph data. A negative polarity low latitude coronal hole is starting its transit of the central meridian on the Southern hemisphere. It may influence Solar wind conditions starting 3 days from now.

Solar wind conditions were nominal with Solar wind speed decreasing to below 350 km/s while total magnetic field was mostly in a nominal 2-4nT range with the Bz component variable. The phi angle indicated connection to a positive sector. Nominal Solar wind conditions are expected over the next days. By noon November 1 the high speed stream from the southern, low latitude coronal hole and the sector boundary change preceding it could potentially enhance Solar wind conditions. Geomagnetic conditions were quiet (local K Dourbes 1, NOAA Kp 1-2) and are expected to remain so over the next days.

Today's estimated international sunspot number (ISN): 024, based on 15 stations.

Solar indices for 28 Oct 2017

Wolf number Catania	///
10cm solar flux	075
AK Chambon La Forêt	010
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	025 - Based on 20 stations

Noticeable events summary

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

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