Viewing archive of Tuesday, 9 April 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Apr 09 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
09 Apr 2019	080	013
10 Apr 2019	081	008
11 Apr 2019	082	007

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a B5.6 class flare. Active Region (AR) 2738 (Mcintosh class:Hhx; Mag. type:Alpha) has been most active, producing several B-class flares, including the B5.6 class flare, which peaked at 14:00 UT (08-Apr-2019). Former AR 2737 is near 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 solar wind speed has fluctuated between 380 and 480 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 5.0 nT. The Bz component has been mainly negative, ranging between -7 and +5 nT. Geomagnetic conditions ranged between Kp index 2-4 (NOAA) and local K index 2-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet to unsettled.

Today's estimated international sunspot number (ISN): 012, based on 19 stations.

Solar indices for 08 Apr 2019

Wolf number Catania	013
10cm solar flux	079
AK Chambon La Forêt	022
AK Wingst	014
Estimated Ap	015
Estimated international sunspot number	013 - Based on 25 stations

Noticeable events summary

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

All times in UTC

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