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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2018 Aug 13 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

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

Protoni solari

Quiet

	10cm flux	Ap
13 Aug 2018	069	006
14 Aug 2018	070	010
15 Aug 2018	070	021

Bulletin

The solar activity has been quiet over the past 24 hours: the visible solar disc is spotless and no significant flares have been recorded. Quiet flaring conditions are expected for the next 24-hour period.

No Earth directed Coronal Mass Ejection has been observed. The solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The solar wind speed ranged between 380 and 420 km/s, the total interplanetary magnetic fields remained below 6 nT, and the southward magnetic component varied between -4 and 3.5 nT. A north pole coronal hole (of positive polarity) that extended up to latitude -15 degree, reached the central meridian on July 11. The fast solar wind associated to this coronal hole is expect to reach Earth on July 15 early in the day.

The geomagnetic conditions were quiet and it is expected to remain quiet as the Earth remains in the slow solar wind speed regime. Enhancement of the geomagnetic conditions are expected on July 14 due to the arrival of the high speed solar wind.

Today's estimated international sunspot number (ISN): 000, based on 19 stations.

Solar indices for 12 Aug 2018

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	009
AK Wingst	008
Estimated Ap	006
Estimated international sunspot number	000 - Based on 22 stations

Noticeable events summary

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

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