Visualizzazione archivio di mercoledì, 18 febbraio AM

Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Feb 18 1232 UTC

SIDC Forecast

Valid from 1230 UTC, 18 Feb 2015 until 20 Feb 2015
Brillamenti solari

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

Geomagnetism

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

Protoni solari

Quiet

10cm fluxAp
18 Feb 2015120017
19 Feb 2015125006
20 Feb 2015130008

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 flux119
AK Chambon La Forêt038
AK Wingst021
Estimated Ap023
Estimated international sunspot number021 - Based on 24 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

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

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