Viewing archive of Tuesday, 20 June 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2017 Jun 20 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
20 Jun 2017	074	008
21 Jun 2017	075	010
22 Jun 2017	076	011

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar activity is expected to remain low over the next 24 hours with a small probability of C-class flares and a very low probability of M-class flares. Active Region (AR) 2663, which produced several B-class flares, is approaching the west limb. An AR currently on the east solar limb has shown some evidence of activity, producing several small CMEs which may enhance activity levels in the coming days. The solar wind speed has decreased from around 500 to 400 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 3 and 4 nT. The Bz component fluctuated around 0 nT. Geomagnetic conditions ranged between Kp index 0-2 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet.

Today's estimated international sunspot number (ISN): 033, based on 25 stations.

Solar indices for 19 Jun 2017

Wolf number Catania	///
10cm solar flux	074
AK Chambon La Forêt	009
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	028 - Based on 35 stations

Noticeable events summary

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

All times in UTC

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