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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2014 Jun 30 1215 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
30 Jun 2014	136	006
01 Jul 2014	143	004
02 Jul 2014	147	001

Bulletin

There are currently 8 sunspot groups visible, with NOAA 2104 and NOAA 2107 the most complex and having a small delta. These two regions, together with an active area near the northeast limb, produced most of the C-class flares observed during the last 24 hours. The strongest event was a C3.4-flare peaking at 04:19UT on 30 June. No CMEs with an Earth directed component were observed. Further C-class flares are expected, with a chance on an M-class flare in particular from NOAA 2104. The solar wind speed was around 350 km/s over the last 24 hours. Bz was negative between 22:00 and 02:00UT (max. value around -8 nT), then mainly positive at +5 nT. Geomagnetic conditions were quiet with an usettled period around midnight. A small equatorial coronal hole passed the central meridian early on 27 June and may influence the geomagnetic field on 1 July. Quiet geomagnetic conditions are expected, with locally a brief active episode possible.

Today's estimated international sunspot number (ISN): 091, based on 20 stations.

Solar indices for 29 Jun 2014

Wolf number Catania	///
10cm solar flux	126
AK Chambon La Forêt	014
AK Wingst	008
Estimated Ap	008
Estimated international sunspot number	062 - Based on 21 stations

Noticeable events summary

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

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