Viewing archive of Friday, 19 January 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Jan 19 1235 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
19 Jan 2018	071	014
20 Jan 2018	071	022
21 Jan 2018	072	011

Bulletin

Over the past 24 hours solar activity has been quiet. No significant flares have been recorded. No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar activity is expected to remain low over the next 24 hours with a small chance of C-class flares. The solar wind speed has increased from around 325 to around 375 km/s over the past 24 hours. The total magnetic field strength has increased from around 5 to 9 nT. The Bz component has ranged between -6 and +6 nT. Geomagnetic conditions ranged between Kp index 0-3 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours. Geomagnetic conditions may increase as a coronal hole has passed into the Western hemisphere and may increase geomagnetic activity later today.

Today's estimated international sunspot number (ISN): 013, based on 13 stations.

Solar indices for 18 Jan 2018

Wolf number Catania	014
10cm solar flux	071
AK Chambon La Forêt	006
AK Wingst	002
Estimated Ap	001
Estimated international sunspot number	013 - Based on 18 stations

Noticeable events summary

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

All times in UTC

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