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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2016 Jun 11 1252 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
11 Jun 2016	088	018
12 Jun 2016	091	008
13 Jun 2016	091	007

Bulletin

The Sun produced no C flares in the past 24 hours. C flaring is possible in the next 24 hours (50% probability). A sector boundary crossing from negative to positive was observed in ACE data at 11:23 UT on June 10. From around 20h UT onwards, a high speed stream associated with a positive coronal hole gradually increased solar wind speeds from 360 km/s to a maximum of 600 km/s, with current values near 445 km/s. The magnitude of the Interplanetary Field has been rising since the sector boundary crossing from about 4 to 14 nT, with current values near 6 nT. During the past 24 hours, geomagnetic conditions have been quiet to unsettled (K Dourbes between 0 and 3; NOAA Kp between 2 and 4). Under the influence of the positive coronal hole high speed stream, active geomagnetic conditions are possible on June 11 and 12, with a chance for minor storm intervals (K Dourbes = 5). Quiet to unsettled levels are expected on June 13.

Today's estimated international sunspot number (ISN): 044, based on 12 stations.

Solar indices for 10 Jun 2016

Wolf number Catania	///
10cm solar flux	085
AK Chambon La Forêt	017
AK Wingst	009
Estimated Ap	009
Estimated international sunspot number	033 - Based on 31 stations

Noticeable events summary

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

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