Viewing archive of Wednesday, 18 July 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Jul 18 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
18 Jul 2018	071	006
19 Jul 2018	071	007
20 Jul 2018	070	012

Bulletin

Solar activity remains to be at very low level, and there were no flares reported during last 24 hours. As there are no active regions present at the visible side of the Sun, we expect such a low flaring activity to persist in the coming hours. No Earth directed CMEs were observed during last 24 hours, and the solar protons remained at the background level.

The increase of the solar wind speed, associated with patchy equatorial coronal hole that reached central meridian on July 16, is expected at the Earth late on July 19. The unsettled to possibly, but not very probably, active conditions are expected in the morning of July 20, due to the expected arrival of the fast solar wind. The geomagnetic conditions are presently quiet, and we expect them to stay so in the coming hours.

Today's estimated international sunspot number (ISN): 000, based on 22 stations.

Solar indices for 17 Jul 2018

Wolf number Catania	012
10cm solar flux	071
AK Chambon La Forêt	011
AK Wingst	008
Estimated Ap	010
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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