Viewing archive of Sunday, 13 January 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Jan 13 1230 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
13 Jan 2019	071	010
14 Jan 2019	071	019
15 Jan 2019	070	007

Bulletin

The solar activity has been quiet over the past 24 hours. The X-ray flux remains below B-level, and the visible solar disc is spotless. Solar activity is expected to remain at low levels.

No Earth directed Coronal Mass Ejection has been observed. The greater than 10 MeV solar protons flux remained at nominal levels over the past 24 hours and is expected to remain so.

The solar wind parameters are at nominal values. The wind speed ranged between 390 and 320 km/s. Total interplanetary magnetic field strength was below 4 nT and the southward magnetic component ranged between -3 and 2 nT. Enhancement of the solar wind parameters is expected today due to the influence of the equatorial coronal hole that has reached the central meridian on Jan 9. A negative polarity equatorial coronal hole crossed the central meridian overnight, it might influence the solar wind conditions on Jan 16 and onward.

The geomagnetic conditions were quiet and are expected to remain quiet until the arrival of the coronal hole influences on the solar wind measurements near Earth later today. Possible isolated minor storm conditions may be observed, in particular, if the Bz component stays negative for longer periods.

Today's estimated international sunspot number (ISN): 000, based on 08 stations.

Solar indices for 12 Jan 2019

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	003
AK Wingst	002
Estimated Ap	001
Estimated international sunspot number	000 - Based on 08 stations

Noticeable events summary

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

All times in UTC

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