Vaata reede, 6 aprill 2018 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2018 Apr 06 1230 UTC

SIDC Forecast

Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

	10cm flux	Ap
06 Apr 2018	066	007
07 Apr 2018	067	007
08 Apr 2018	066	011

Bulletin

Over the past 24 hours solar activity has been low with no active regions on the solar disk. No flares have been recorded. No Earth directed Coronal Mass Ejections (CMEs) have been detected. The greater than 10MeV proton flux remained at background levels over the past 24 hours. A low latitude negative polarity coronal hole has reached the central meridian. Solar activity is expected to remain low over the next 24 hours. Only B-class flares can be expected. The solar wind speed has been slowly increasing from around 350 to 450 km/s during the first half of the period. Later solar wind speed growth stabilized around 420 km/s. The total magnetic field strength has fluctuated between 2 nT and 9 nT. The Bz component has fluctuated between -6 nT and +7 nT. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Mostly quiet to unsettled geomagnetic levels are expected today and tomorrow. Active conditions can be expected most likely from April 8 afternoon due to the influences of a high speed stream coming from the low-latitude negative polarity coronal hole.

Today's estimated international sunspot number (ISN): 000, based on 27 stations.

Solar indices for 05 Apr 2018

Wolf number Catania	000
10cm solar flux	066
AK Chambon La Forêt	012
AK Wingst	010
Estimated Ap	010
Estimated international sunspot number	000 - Based on 35 stations

Noticeable events summary

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

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