Viewing archive of Tuesday, 18 June 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Jun 18 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Solar protons

Quiet

	10cm flux	Ap
18 Jun 2019	066	011
19 Jun 2019	067	011
20 Jun 2019	067	004

Bulletin

Solar activity was at very low levels. The Sun remains spotless and no significant flares have been recorded. No Earth directed coronal mass ejections (CMEs) were observed over the last 24 hours in the available coronagraph imagery. The greater than 10 MeV proton flux was at nominal values. Solar activity is expected to remain at very low levels.

The solar wind fluctuated between 300 and 345 km/s (DSCOVR). Bz varied between -4 and +5 nT. The interplanetary magnetic field was predominantly directed away from the Sun (positive sector). Quiet to unsettled geomagnetic conditions were observed, with the Kp index ranging between 0-1 (NOAA) and the local K index (Dourbes) ranging between 0-3 over the past 24 hours.

Quiet to unsettled geomagnetic conditions are expected due to the arrival of the solar wind streams associated with a series of fragmented negative polarity coronal holes. Isolated active periods are also possible.

Today's estimated international sunspot number (ISN): 000, based on 21 stations.

Solar indices for 17 Jun 2019

Wolf number Catania	000
10cm solar flux	066
AK Chambon La Forêt	006
AK Wingst	003
Estimated Ap	002
Estimated international sunspot number	000 - Based on 29 stations

Noticeable events summary

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

All times in UTC

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