Prohlížíte si archiv čtvrtek 19. února 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2015 Feb 19 1233 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
19 Feb 2015	125	010
20 Feb 2015	130	006
21 Feb 2015	140	008

Bulletin

A few new regions developed themselves during the past period. NOAA active regions (AR) 2287, 2288 and 2290 are the most interesting ones. NOAA ARs 2287 and 2288 evolved to beta regions, while NOAA ARs 2286, 2289, 2290 are alpha regions. Flaring activity slightly increased with three C-class flares. The strongest flare was a C3.5 flare, originating from the northern part of NOAA AR 2282. More C-class flares are expected, mainly from NOAA 2282, 2287, 2288 and 2290. No Earth-bound CMEs were observed. The solar wind was at nominal levels, with the magnitude of the interplanetary magnetic field between 3 and 5 nT and a fluctuating Bz component. The solar wind speed slightly decreased from 470 to about 400 km/s. Geomagnetic conditions were quiet to unsettled (K=1 to 3), at the global and local level (Dourbes), which is expected to continue for the next 48 hours.

Today's estimated international sunspot number (ISN): 063, based on 08 stations.

Solar indices for 18 Feb 2015

Wolf number Catania	///
10cm solar flux	121
AK Chambon La Forêt	020
AK Wingst	022
Estimated Ap	020
Estimated international sunspot number	059 - Based on 23 stations

Noticeable events summary

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

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