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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Jun 19 1232 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
19 Jun 2016	084	007
20 Jun 2016	084	007
21 Jun 2016	084	007

Bulletin

Solar activity was low with X-ray flux remaining initially below C level, while a C flare was eventually produced just before the end of the period by a newly emerging region near N12W30 (numbered NOAA 2558). It peaked at 11:58UT at magnitude C1.7. New region NOAA 2557 also got numbered but seems to be short lived. Most regions on disk are fairly simple and mostly inactive and X-ray flux is expected to remain mostly below C-level, while C-flaring remains possible from the newly emerging region 2558. No Earth directed CME's have been recorded in coronagraph data. Solar wind speed remained elevated with a maximum of around 650 km/s and later a decrease to values of around 550 km/s. Total magnetic field further decreased to a nominal 4nT with Bz variable. The magnetic field phi angle indicated a positive polarity sector. Solar wind conditions should further recover to nominal levels. Geomagnetic conditions were quiet to unsettled (both local K Dourbes and NOAA Kp 1-3) and are expected to remain so.

Today's estimated international sunspot number (ISN): 055, based on 16 stations.

Solar indices for 18 Jun 2016

Wolf number Catania	///
10cm solar flux	084
AK Chambon La Forêt	014
AK Wingst	010
Estimated Ap	009
Estimated international sunspot number	049 - Based on 23 stations

Noticeable events summary

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

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