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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2019 Jan 19 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
19 Jan 2019	069	006
20 Jan 2019	068	007
21 Jan 2019	068	007

Bulletin

Solar X-ray flux remained below B level throughout the period. The Solar disk is spotless and X-ray flux is expected to continue to be below C level.

No earth directed CMEs have been recorded.

The proton flux levels were at background values and are expected to remain so.

An equatorial positive polarity coronal hole is now starting to transit the central meridian.

Solar wind conditions have returned to nominal. Solar wind speed decreased steadily from around 480 km/s to around 400 km/s. Total magnetic field was below 5nT. The magnetic field phi angle was in the negative sector. Nominal Solar wind conditions are expected over the next days. The Solar wind sector change preceding the coronal hole that is now transiting the central meridian is not expected before January 22 and further associated Solar wind enhancements are only expected to set in January 23/24.

Geomagnetic conditions were quiet (local K Dourbes and NOAA Kp 0-2) and are expected to remain quiet over the next days.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 18 Jan 2019

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	009
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	000 - Based on 20 stations

Noticeable events summary

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

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