Viewing archive of Thursday, 4 June 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Jun 04 1231 UTC

SIDC Forecast

Solar flares

M-class flares expected (probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
04 Jun 2015	114	005
05 Jun 2015	119	005
06 Jun 2015	124	006

Bulletin

The strongest flare of the past 24 hours was the C8.1 flare peaking today at 09:47 UT in the Catania sunspot group 80 at the north-east limb (no NOAA AR number yet). SDO/AIA data show the associated coronal dimming indicating the eruption of a CME, although no LASCO data is available to confirm it at the moment of writing. Due to the limb position of the CME source region, we do not expect it to arrive at the Earth and have geomagnetic consequences. We expect flaring activity to remain at the C-level with a small chance for an M-class flare. The Earth is currently inside a slow (around 270 km/s) solar wind flow with average (around 5 nT) interplanetary magnetic field magnitude. The geomagnetic conditions are quiet and are expected to remain so.

Today's estimated international sunspot number (ISN): 058, based on 19 stations.

Solar indices for 03 Jun 2015

Wolf number Catania	047
10cm solar flux	109
AK Chambon La Forêt	008
AK Wingst	004
Estimated Ap	004
Estimated international sunspot number	036 - Based on 30 stations

Noticeable events summary

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

All times in UTC

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