Viewing archive of Thursday, 9 June 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Jun 09 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
09 Jun 2016	080	005
10 Jun 2016	080	014
11 Jun 2016	083	020

Bulletin

Solar activity once more was very low. Beta region NOAA AR 2552 is the only sunspot region on the frontside of the Sun and produced no C flares. Solar activity is expected to remain very low (no C flaring) for the next 24 hours. CACTUS detected a northward CME in LASCO C2 data at 01:48 UT on June 9, which is most probably associated with a backside event. During the past 24 hours, ACE solar wind speed decreased from about 440 to about 350 km/s. Meanwhile, the magnitude of the Interplanetary Magnetic Field (IMF) varied between 1 and 7 nT. During the past 24 hours, geomagnetic conditions have been quiet to unsettled (K Dourbes between 0 and 3; NOAA Kp between 0 and 2). Quiet to unsettled geomagnetic levels (K Dourbes < 4) are expected on June 9 and 10, with a chance for active geomagnetic levels (K Dourbes = 4) on June 10 due to an expected sector boundary crossing. Due to the expected arrival of a positive coronal hole high speed stream, active geomagnetic conditions are possible on June 11, with a chance for minor storm intervals (K Dourbes = 5).

Today's estimated international sunspot number (ISN): 019, based on 23 stations.

Solar indices for 08 Jun 2016

Wolf number Catania	040
10cm solar flux	080
AK Chambon La Forêt	010
AK Wingst	008
Estimated Ap	007
Estimated international sunspot number	016 - Based on 35 stations

Noticeable events summary

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

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