Viewing archive of Thursday, 4 May 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2017 May 04 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
04 May 2017	074	006
05 May 2017	073	007
06 May 2017	074	012

Bulletin

Over the past 24 hours solar activity has been low. No significant flares have been recorded. Active Region (AR) 2654 (Mcintosh class:Dso; Mag. type:Beta) has shown some evidence of flux emergence and cancellation in HMI magnetogram observations, this may increase flaring activity. No Earth directed Coronal Mass Ejections (CMEs) have been detected in coronagraph observations. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a small probability of C-class flares. The solar wind speed has fluctuated between 330 and 380 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 2 nT and 4 nT. The Bz component was largely positive, fluctuating between -1.8 and +2 nT. Geomagnetic conditions ranged between Kp index 0-2 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours. Over the next 24 hours Geomagnetic conditions are expected to be quiet.

Today's estimated international sunspot number (ISN): 017, based on 17 stations.

Solar indices for 03 May 2017

Wolf number Catania	030
10cm solar flux	075
AK Chambon La Forêt	005
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	017 - 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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