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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Dec 05 1257 UTC

SIDC Forecast

Brillamenti solari

C-class flares expected, (probability >=50%)

Geomagnetism

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

Protoni solari

Quiet

	10cm flux	Ap
05 Dec 2016	082	012
06 Dec 2016	081	016
07 Dec 2016	080	019

Bulletin

Over the past 24 hours solar activity has been low. The largest flare was a C1.8 class flare. Active Region (AR) 2615 (Mcintosh class:Dai; Mag. type:Beta) has been most active, producing 2 C-class flares, including the C1.8 class flare, which peaked at 17:35 UT yesterday. All other ARs have shown low levels of activity. AR 2615 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. 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 high probability of C-class flares and a low probability of M-class flares. The solar wind speed has fluctuated between 275 and 350 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 2 nT and 7 nT. The Bz component fluctuated between -5 and +5 nT. Geomagnetic conditions ranged between Kp index 0-2 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours. There are no significant trans-equatorial coronal holes. Geomagnetic conditions are expected to be quiet to unsettled.

Today's estimated international sunspot number (ISN): 037, based on 21 stations.

Solar indices for 04 Dec 2016

Wolf number Catania	///
10cm solar flux	082
AK Chambon La Forêt	007
AK Wingst	001
Estimated Ap	001
Estimated international sunspot number	039 - Based on 27 stations

Noticeable events summary

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

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