Перегляд архіву середа, 18 лютого 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2015 Feb 18 1232 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Сонячні протони

Quiet

	10cm flux	Ap
18 Feb 2015	120	017
19 Feb 2015	125	006
20 Feb 2015	130	008

Bulletin

The solar activity was very low. Regions NOAA 2284 and 2285 were decaying further, while NOAA 2282 was stable. Flaring activity is expected to remain low, with some chance for C-flares during the next two days. No CMEs Earth directed CMEs were observed. The interplanetary magnetic field was enhanced but with a decreasing magnitude from 14 to 5 nT. The Bz component mostly was negative. The disturbance starting at 9:40 UT on 16th of February possibly is related to a equatorial CH that passed the central meridian on the 11th of February. The solar wind speed steadily increased from about 400 to 470 km/s. Geomagnetic conditions were unsettled, with a several time slots of active conditions (K=4) at the global and local level (after 18 UT on the 17th and at 3 and 4 UT on the 18th of February at the local level at Dourbes). Geomagnetic conditions are expected to return to quiet to unsettled levels for the next 48 hours.

Today's estimated international sunspot number (ISN): 060, based on 10 stations.

Solar indices for 17 Feb 2015

Wolf number Catania	///
10cm solar flux	119
AK Chambon La Forêt	038
AK Wingst	021
Estimated Ap	023
Estimated international sunspot number	021 - Based on 24 stations

Noticeable events summary

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

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