Viewing archive of Monday, 25 June 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Jun 25 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
25 Jun 2018	075	010
26 Jun 2018	074	018
27 Jun 2018	073	013

Bulletin

Solar activity is low and only several B-class flares were reported during last 24 hours. We do not expect change in the level of flaring activity in the coming hours. Presently available coronagraph images do not show signatures of the Earth directed CMEs, and the solar protons remained at the background level. The solar wind speed presently amounts about 420 km/s and the interplanetary magnetic field magnitude is 5 nT. The increase of the solar wind speed, associated with the recurrent coronal hole (the low latitude extent of the southern polar coronal hole which is reaching even up to solar equator), is expected late today or tomorrow, June 26. The geomagnetic conditions are presently quiet and we expect quiet to unsettled geomagnetic conditions in the coming hours. The intervals of active geomagnetic conditions are possible starting from June 26.

Today's estimated international sunspot number (ISN): 017, based on 23 stations.

Solar indices for 24 Jun 2018

Wolf number Catania	///
10cm solar flux	075
AK Chambon La Forêt	013
AK Wingst	///
Estimated Ap	011
Estimated international sunspot number	025 - Based on 31 stations

Noticeable events summary

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

All times in UTC

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