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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Jul 14 1232 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

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

Protoni solari

Quiet

	10cm flux	Ap
14 Jul 2015	110	010
15 Jul 2015	110	011
16 Jul 2015	108	007

Bulletin

NOAA AR 2381 produced a C1.0 flare peaking at 9:25 UT on July 14. More C flaring is possible. During the last 24 hours, solar wind speed gradually decreased from about 520 to 450 km/s, while the magnitude of the Interplanetary Magnetic Field varied between 6 and 9 nT. Bz was mostly below -4 nT between about 14:30 and 20:00 UT on July 13, which resulted in a geomagnetic storm (NOAA Kp = 5 between 18h and 21h UT, K Dourbes = 6 between 20h and 22h UT). Quiet to active geomagnetic conditions (K Dourbes < 5) with possible minor storm excursions (K Dourbes = 5) are expected on July 14 and 15. Quiet to unsettled conditions (K Dourbes < 4) are likely on July 16.

Today's estimated international sunspot number (ISN): 047, based on 13 stations.

Solar indices for 13 Jul 2015

Wolf number Catania	044
10cm solar flux	110
AK Chambon La Forêt	043
AK Wingst	035
Estimated Ap	030
Estimated international sunspot number	055 - Based on 19 stations

Noticeable events summary

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

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