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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Jan 19 1240 UTC

SIDC Forecast

Brillamenti solari

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

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

Protoni solari

Quiet

	10cm flux	Ap
19 Jan 2017	079	019
20 Jan 2017	080	018
21 Jan 2017	079	008

Bulletin

Solar activity remains to be low, with only one B1.3 flare reported in the last 24 hours. We expect solar activity to remain on the same low level, with isolated C-class flare possible but not very probable. No Earth directed CMEs were observed during last 24 hours.

The Earth is inside the fast solar wind with the speed of about 620 km/s. The interplanetary magnetic field magnitude decreased, and it presently amounts about 5 nT. Due to the influence of the fast flow disturbed geomagnetic conditions were reported from about 18:00 of January 18 up to the early morning of January 19 (local station at Dourbes reported K=4 and NOAA reported Kp=4). Due to the ongoing influence of the fast solar wind, we can expect unsettled to active conditions in the coming hours.

Today's estimated international sunspot number (ISN): 031, based on 15 stations.

Solar indices for 18 Jan 2017

Wolf number Catania	049
10cm solar flux	079
AK Chambon La Forêt	030
AK Wingst	019
Estimated Ap	020
Estimated international sunspot number	036 - Based on 25 stations

Noticeable events summary

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

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