Перегляд архіву четвер, 20 червня 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2019 Jun 20 1230 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
20 Jun 2019	068	009
21 Jun 2019	069	008
22 Jun 2019	069	003

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 gradually increased over the period from 320 to a maximum of around 400 km/s (DSCOVR). Bz varied between -7 and +4 nT. The interplanetary magnetic field was predominantly directed towards the Sun (negative sector). Quiet geomagnetic conditions were observed for the first part of the period becoming unsettled from 6 UT during a period of sustained negative Bz, with the Kp index (NOAA) and the local K index (Dourbes) reaching 3.

Quiet to unsettled geomagnetic conditions are expected to continue, due to the continued influence of the solar wind streams associated with a series of fragmented negative polarity coronal holes.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 19 Jun 2019

Wolf number Catania	000
10cm solar flux	068
AK Chambon La Forêt	007
AK Wingst	004
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

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