Перегляд архіву четвер, 3 грудня 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2015 Dec 03 1230 UTC

SIDC Forecast

Сонячні спалахи

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
03 Dec 2015	093	007
04 Dec 2015	093	010
05 Dec 2015	094	011

Bulletin

Solar activity has been low over the past 24 hours. The largest flare was a C1.2 class flare. NOAA Active Region (AR) 2458 (Cao Beta) has produced most of the activity, including the C1.2 flare peaking at 06:28 UT this morning. AR 2458 still shows some evidence of flux emergence and has the potential to produce more activity, but will pass over the West solar limb soon. There is currently an AR approaching the East limb, which may have the potential to increase activity in the coming days. An eruption was observed off of the Southeast limb around 18:00 UT on 2015-Nov-02, but this was back-sided and unlikely to interact with the Earth. No Earth directed CMEs have been observed in the past 24 hours. Solar activity is expected to remain low. The solar wind speed has fluctuated around 425 km /s over the past 24 hours. The total magnetic field has remained at 6 nT, and the Bz component has fluctuated between +5 and -5 nT. Geomagnetic conditions ranged between quiet and moderate (NOAA Kp 1-3, local K Dourbes 0-3). A large positive polar coronal hole, with a section extending to low latitudes, is currently located near central solar longitudes, and may increase solar wind and geo- activity conditions in 3-4 days. The solar wind conditions are expected to be at background levels over the next couple of days, with a small perturbation generated by an eruption on 2015-Dec-01.

Today's estimated international sunspot number (ISN): 036, based on 13 stations.

Solar indices for 02 Dec 2015

Wolf number Catania	061
10cm solar flux	095
AK Chambon La Forêt	014
AK Wingst	010
Estimated Ap	009
Estimated international sunspot number	043 - Based on 23 stations

Noticeable events summary

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

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