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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2014 May 18 1245 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
18 May 2014	132	006
19 May 2014	130	005
20 May 2014	130	006

Bulletin

Solar activity remains low with only low C-class flares reported. The strongest flare in last 24 hours was a long duration C3.8 flare (peak time at 06:54 UT) observed this morning. The flare originated from the Catania sunspot group 43 (NOAA AR 2056) currently situated at the west solar limb. From the currently available data it seems that the flare was associated with a rather narrow CME. We expect flaring activity on the C-level. The Earth is still inside a slow solar wind flow with the speed of about 350 km/s. The interplanetary magnetic field magnitude is 4 nT. The geomagnetic conditions are at the moment quiet and expected to remain so in the following 48 hours.

Today's estimated international sunspot number (ISN): 098, based on 21 stations.

Solar indices for 17 May 2014

Wolf number Catania	///
10cm solar flux	134
AK Chambon La Forêt	008
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	104 - Based on 24 stations

Noticeable events summary

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

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