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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2014 Aug 17 1205 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
17 Aug 2014	115	006
18 Aug 2014	112	007
19 Aug 2014	112	011

Bulletin

No C flares were registered during the past 24 hours. In the next 48 hours, eruptive conditions (C flaring) are possible, especially from beta-gamma regions NOAA AR 2144 and 2139. Over the past 24 hours, solar wind speed as observed by ACE was stable around 280 km/s until it jumped to a plateau of about 300 km/s around 23h UT on August 16. Meanwhile, the magnitude of the Interplanetary Magnetic Field (IMF) increased from about 2 to 8 nT. Over the past 24 hours, geomagnetic conditions were quiet (K Dourbes between 0 and 2; NOAA Kp between 0 and 2). Quiet geomagnetic levels (K Dourbes < 4) are expected on August 17, 18 and 19. The expected arrival of the halo CME of August 15 at the end of August 19 may induce active geomagnetic conditions.

Today's estimated international sunspot number (ISN): 080, based on 11 stations.

Solar indices for 16 Aug 2014

Wolf number Catania	///
10cm solar flux	112
AK Chambon La Forêt	005
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	077 - Based on 24 stations

Noticeable events summary

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

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