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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Oct 24 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Minor storm expected (A>=30 or K=5)

Protoni solari

Quiet

	10cm flux	Ap
24 Oct 2015	106	010
25 Oct 2015	100	020
26 Oct 2015	095	006

Bulletin

Only one single C1.9 flare erupted from the Sun, with NOAA active region (AR) 2434 as source region. NOAA AR 2436 remains the largest region on disc, but is decaying in complexity. Flaring activity at the C-level is expected. No Earth-directed CMEs were observed.

The solar wind speed was variable between 400 and 480 km/s, while the magnitude of the interplanetary magnetic field was relatively stable near 6 nT. Mainly quiet (K<3, at local level in Dourbes) and up to unsettled (K=3 at global NOAA Kp) geomagnetic conditions were observed. A glancing blow from the October 22 CME may arrive in the coming period, which may result in (at maximum) minor storm (K=5) conditions.

Today's estimated international sunspot number (ISN): 076, based on 07 stations.

Solar indices for 23 Oct 2015

Wolf number Catania	///
10cm solar flux	115
AK Chambon La Forêt	014
AK Wingst	008
Estimated Ap	006
Estimated international sunspot number	088 - Based on 15 stations

Noticeable events summary

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

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