Vaata esmaspäev, 8 aprill 2019 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2019 Apr 08 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
08 Apr 2019	077	018
09 Apr 2019	079	008
10 Apr 2019	080	008

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a B2.7 class flare. Active Region (AR) 2738 (Mcintosh class:Hsx; Mag. type:Alpha) has been most active, producing several B-class flares, including the B2.7 class flare, which peaked at 06:25 UT. Former AR 2737 is approaching the west solar limb, and has shown little activity. No significant filament channels have been seen on the solar disk. No Earth directed Coronal Mass Ejections (CMEs) have been detected. There are no significant low latitude coronal holes on the solar disk. 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 reasonable chance of a C-class flare from AR 2738. The region is currently close to the east solar limb, and it is difficult to assess the associated magnetogram data. The solar wind speed has fluctuated between 375 and 400 km/s over the past 24 hours, but jumped up to 450 km/s this morning. The total magnetic field strength has slowly increased from around 3.5 to approximately 7.5 nT. The Bz component fluctuated around 0 nT, ranging between -8 and +7 nT. Geomagnetic conditions ranged between Kp index 1-4 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Kp reached 4 this morning due to the Bz reaching -8 nT for a short period. Geomagnetic conditions are expected to be quiet with a small possibility of active conditions.

Today's estimated international sunspot number (ISN): 012, based on 17 stations.

Solar indices for 07 Apr 2019

Wolf number Catania	///
10cm solar flux	077
AK Chambon La Forêt	014
AK Wingst	007
Estimated Ap	006
Estimated international sunspot number	012 - Based on 23 stations

Noticeable events summary

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

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