Viewing archive of Saturday, 28 October 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2017 Oct 28 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
28 Oct 2017	076	006
29 Oct 2017	076	007
30 Oct 2017	076	007

Bulletin

Solar X-ray flux remained below the B level throughout the period. The two regions on disk are simple and quiet and X ray flux is expected to remain below C level over the next days. Proton flux levels were at background values and are expected to remain so. No Earth directed CME's were recorded in coronagraph data.

Solar wind saw a further recovery to nominal conditions. Solar wind speed declined to below 400 km/s while total magnetic field was around a nominal 5nT with the Bz component variable. Nominal Solar wind conditions are expected over the next days. Geomagnetic conditions were quiet (local K Dourbes 1-2, NOAA Kp 0-2) and are expected to remain so over the next days.

Today's estimated international sunspot number (ISN): 025, based on 14 stations.

Solar indices for 27 Oct 2017

Wolf number Catania	024
10cm solar flux	076
AK Chambon La Forêt	008
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	025 - Based on 26 stations

Noticeable events summary

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

All times in UTC

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