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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Mar 21 1242 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

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

Protoni solari

Quiet

	10cm flux	Ap
21 Mar 2016	082	010
22 Mar 2016	083	007
23 Mar 2016	084	006

Bulletin

Over the past 24 hours solar activity has been very low. No significant flares have been recorded. All Active Regions (AR) have shown low levels of activity. AR 2254 (Macintosh class:Eso; Mag. type:Beta) has shown some evidence of flux emergence and cancellation in HMI observations, this may increase flaring activity. Solar proton levels have 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 C-class flares and a low probability of M-class flares. The solar wind speed has fluctuated between 400 and 500 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 5 and 7 nT yesterday, but dropped below 5 nT around 04:00 UT this morning and remained around this level. The Bz component increased from around -5 nT yesterday to around 5 nT this morning, but dropped to around 0 nT at 04:00 UT, and remained around this level. Geomagnetic conditions ranged between Kp index 2-4 (NOAA) and local K index 1-4 (Dourbes) over the past 24 hours. There is currently a large Southern polar coronal hole with an extension to higher latitudes in the Western hemisphere that may increase solar wind speeds slightly over the coming days.

Today's estimated international sunspot number (ISN): 029, based on 10 stations.

Solar indices for 20 Mar 2016

Wolf number Catania	///
10cm solar flux	088
AK Chambon La Forêt	019
AK Wingst	013
Estimated Ap	012
Estimated international sunspot number	029 - Based on 22 stations

Noticeable events summary

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

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