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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Jun 15 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
15 Jun 2015	128	014
16 Jun 2015	124	010
17 Jun 2015	120	007

Bulletin

Solar activity was low. Just a couple of low C-class flares occurred over the period. The largest one was a C2.6 flare peaking at 10:32 UT from a new region rotating onto the disk at the East limb. NOAA region 2367, currently the most complex region on disk, also produced just a couple of minor C flares. Flaring at C level is expected to continue, with a slight chance for M flaring from region 2367 and the new region on the East limb. Yesterdays C5 flare from NOAA region 2365 produced a CME which could only marginally classify as partial halo (first appearance in SOHO/LASCO C2 around 4:24 UT, June 14). It was predominantly directed in the southwestern direction and with its rather limited angular extent, it is unlikely to have any influence on Earth. No other Earth directed CME's have been recorded. Solar wind conditions reflected the high speed stream influence from a positive polarity coronal hole. Solar wind speed was in the 550 to 625 km/s range. Total magnetic field declined steadily from the peak of 20 nT before the reporting period to fairly nominal values between 4-6nT currently. Bz was variable with negative peaks not lower than -7nT. Geomagnetic conditions were quiet to unsettled (NOAA Kp 2-3, local K Dourbes 1-3). Just before the start of the reporting period NOAA Kp saw an isolated period of minor geomagnetic storm, reflected locally in an active as recorded in Dourbes. The high speed stream is expected to decline over the next days. Essentially quiet to unsettled geomagnetic conditions are expected, with potentially an isolated active period.

Today's estimated international sunspot number (ISN): 046, based on 15 stations.

Solar indices for 14 Jun 2015

Wolf number Catania	///
10cm solar flux	132
AK Chambon La Forêt	020
AK Wingst	016
Estimated Ap	019
Estimated international sunspot number	070 - Based on 22 stations

Noticeable events summary

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

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