Viewing archive of Wednesday, 26 June 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Jun 26 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
26 Jun 2019	068	008
27 Jun 2019	067	011
28 Jun 2019	067	006

Bulletin

Solar flaring activity continues to be very low without flares reported. One of the two numbered active regions NOAA AR 2742 rotated behind the west solar limb. Presently only one active region is observed on the visible side of the Sun, Catania sunspot group 19 (NOAA AR 2743). This sunspot group has only alpha configuration of its photospheric magnetic field and is therefore not expected to be source of flaring activity in the coming hours. During last few days only very narrow and slow CMEs were reported and there were no Earth directed CMEs. The solar protons remained at the background level.

The solar wind speed is presently about 400 km/s and slowly increasing. The interplanetary magnetic field magnitude remains to be low, with the value of about 3 nT. The in situ observations do not show clear signatures of the fast solar wind, but observed increase of the solar wind speed could be possibly associated with the expected arrival of the fast solar wind. The geomagnetic conditions are quiet and we expect quiet to possibly unsettled geomagnetic conditions.

Today's estimated international sunspot number (ISN): 011, based on 18 stations.

Solar indices for 25 Jun 2019

Wolf number Catania	011
10cm solar flux	068
AK Chambon La Forêt	009
AK Wingst	004
Estimated Ap	005
Estimated international sunspot number	012 - 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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