Viewing archive of Tuesday, 5 April 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Apr 05 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
05 Apr 2016	083	008
06 Apr 2016	084	007
07 Apr 2016	083	008

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a B4.6 class flare, produced by Active Region (AR) 2528 (Macintosh class:Bxo; Mag. type:Beta), which peaked at 07:37 UT this morning. This AR 2528 is currently the only significant region on disk with evidence of small amounts of flux cancellation in HMI magnetogram observations. There are two other ARs 2527 and AR 2526 (Hsx; Alpha), and 2526 has moved onto the West limb. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares. The solar wind speed has fluctuated between 350 to 450 km/s over the past 24 hours. The total magnetic field strength remained stable with the magnitude varying between 6 and 8 nT. The Bz component remained around 0 nT, varying between +9 and -7 nT. Geomagnetic conditions ranged between Kp index 1-3 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. There is currently a small coronal hole on disk. Geomagnetic activity is expected to remain low within next 2 days.

Today's estimated international sunspot number (ISN): 033, based on 19 stations.

Solar indices for 04 Apr 2016

Wolf number Catania	045
10cm solar flux	083
AK Chambon La Forêt	009
AK Wingst	008
Estimated Ap	006
Estimated international sunspot number	038 - Based on 28 stations

Noticeable events summary

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

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