Viewing archive of Friday, 4 July 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Jul 04 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
04 Jul 2014	186	007
05 Jul 2014	193	004
06 Jul 2014	199	004

Bulletin

There are currently 9 sunspot groups visible, with NOAA 2104 and 2109 the largest and magnetically most complex regions. Only 1 C-class flare was recorded. This C2.4 flare peaked at 05:37UT and had its source in NOAA 2109. A long filament near the west limb became unstable and mostly disappeared overnight (3-4 July), however no obvious CME was observed. Some subflaring activity in the long filament near NOAA 2106 was observed around 09:30UT. C-class flares are expected, with a chance on a strong flare from especially NOAA 2104 and 2109. Solar wind speed remained fairly constant around 350 km/s. Bz was mostly negative between 21:00 and 08:00UT, and positive for the rest of the period. Its value varied between -5 and +4 nT. Quiet geomagnetic conditions were observed and are expected to remain so.

Today's estimated international sunspot number (ISN): 131, based on 16 stations.

Solar indices for 03 Jul 2014

Wolf number Catania	///
10cm solar flux	178
AK Chambon La Forêt	010
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	133 - Based on 24 stations

Noticeable events summary

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

All times in UTC

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