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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2013 Jun 10 1242 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
10 Jun 2013	093	011
11 Jun 2013	090	007
12 Jun 2013	088	007

Bulletin

Solar activity has been very low in the past 24 hours, with only a B4.1 flare in NOAA AR 1765 at 1018 UT (peak time), on June 9. This region is now classified as beta, but is still capable of producing C flares, which justifies the eruptive conditions foreseen for the next 48 hours. Geomagnetic conditions are currently unsettled to active at local and planetary levels. ACE observations show relatively strong variations of the Bz component of the interplanetary magnetic field, down to -10 nT early on June 10, but currently attenuating. A very small step in the solar wind speed around 0200 UT, associated with the beginning of this unsettled period, hints at the arrival of a very attenuated shock, possibly the eastern edge of the CME associated with the M flare of June 7. We expect mostly quiet conditions for the next 48 hours.

Today's estimated international sunspot number (ISN): 020, based on 11 stations.

Solar indices for 09 Jun 2013

Wolf number Catania	///
10cm solar flux	096
AK Chambon La Forêt	019
AK Wingst	012
Estimated Ap	011
Estimated international sunspot number	027 - Based on 13 stations

Noticeable events summary

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

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