Viewing archive of Monday, 11 June 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Jun 11 1230 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
11 Jun 2018	070	006
12 Jun 2018	071	011
13 Jun 2018	071	017

Bulletin

Solar activity was very low, with X-ray flux remaining below B level. A new region is rotating onto the disk, but at present chances for C flares are still judged to be very low.

No Earth directed CMEs have been observed in coronagraph data.

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

A small negative polarity coronal hole in the southern hemisphere has passed the central meridian yesterday. It may become geoeffective from late June 12.

Solar wind conditions have been nominal with solar wind speed further decreasing to below 300 km/s. Total magnetic field was 1-4 nT with the Bz component mainly negative but not reaching below -3nT. The magnetic field phi angle was initially variable but now clearly indicates a negative sector connection. Solar wind conditions may become slightly disturbed from late June 12 due a small coronal hole in the Southern hemisphere.

Geomagnetic conditions were quiet (local K Dourbes 1-2, and NOAA Kp 1) and are initially expected to remain so. Later unsettled conditions may be experienced.

Today's estimated international sunspot number (ISN): 000, based on 14 stations.

Solar indices for 10 Jun 2018

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	006
AK Wingst	///
Estimated Ap	004
Estimated international sunspot number	000 - Based on 22 stations

Noticeable events summary

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

All times in UTC

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