Viewing archive of Friday, 10 June 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Jun 10 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Minor storm expected (A>=30 or K=5)

Solar protons

Quiet

	10cm flux	Ap
10 Jun 2016	088	010
11 Jun 2016	091	025
12 Jun 2016	094	013

Bulletin

NOAA AR 2552 (beta-delta region now) produced two low C flares in the past 24 hours. The brightest one was a C1.5 flare with peak time at 12:34 UT on June 9. A new, yet unnumbered region is rotating around the East limb. More C flaring is possible in the next 24 hours (65% probability). During the past 24 hours, ACE solar wind speed decreased from about 375 to about 350 km/s. Meanwhile, the magnitude of the Interplanetary Magnetic Field (IMF) varied between 1 and 4 nT. During the past 24 hours, geomagnetic conditions have been quiet to unsettled (K Dourbes between 0 and 3; NOAA Kp between 0 and 1). Quiet to unsettled geomagnetic levels (K Dourbes < 4) are expected on June 10, with a chance for active geomagnetic levels (K Dourbes = 4) 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 and 12, with a chance for minor storm intervals (K Dourbes = 5).

Today's estimated international sunspot number (ISN): 032, based on 23 stations.

Solar indices for 09 Jun 2016

Wolf number Catania	036
10cm solar flux	085
AK Chambon La Forêt	006
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	021 - Based on 34 stations

Noticeable events summary

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

All times in UTC

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