Viewing archive of Tuesday, 10 December 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Dec 10 1255 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
10 Dec 2013	170	012
11 Dec 2013	173	010
12 Dec 2013	173	007

Bulletin

The situation concerning flares didn't change much: the Sun is still in a C-flaring mood, the probability for M-flares is around 40%. A series of three small sunspots popped up: Catania 73, 74 and 77. They are small but indicate that solar activity is still on the run. The solar wind speed has decreased to 400 km/s. The glancing blow linked with the plasma eruption on December 7 didn't arrive. We don't exclude a later arrival.

Today's estimated international sunspot number (ISN): 127, based on 18 stations.

Solar indices for 09 Dec 2013

Wolf number Catania	///
10cm solar flux	168
AK Chambon La Forêt	010
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	098 - Based on 18 stations

Noticeable events summary

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

All times in UTC

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