Viewing archive of Sunday, 15 April 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Apr 15 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
15 Apr 2018	070	006
16 Apr 2018	069	006
17 Apr 2018	068	007

Bulletin

The solar activity has been quiet over the past 24 hours. The active region (NOAA 2704, Mcintosh class: Axx, Mag. type: Alpha) has decayed. No significant flare has been recorded. The flaring conditions are expected to be quiet for the next 24-hour period with a very small chance of C-class flare.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The solar wind conditions are showing an ambient-background and slow solar wind speed regime. The solar wind speed has decreased from around 450 to 345 km/s over the past 24 hours. The total magnetic field strength remained below 5.5 nT, and the Bz component was fluctuating between -3.5 and +2.5 nT. Solar wind conditions are expected to remain in the slow speed regime.

Geomagnetic conditions have been mostly quiet over the past 24 hours, and ranged between Kp index 1-2 (NOAA) and local K index 0-3 (Dourbes). The geomagnetic conditions are expected to remained quiet for the next period.

Today's estimated international sunspot number (ISN): 007, based on 16 stations.

Solar indices for 14 Apr 2018

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	///
AK Wingst	007
Estimated Ap	007
Estimated international sunspot number	000 - Based on 20 stations

Noticeable events summary

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

All times in UTC

<< Go to daily overview page