Viewing archive of Saturday, 12 January 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Jan 12 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
12 Jan 2019	068	005
13 Jan 2019	068	019
14 Jan 2019	068	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 influence of the coronal hole that transited the central meridian on Jan 8 is weakening. The solar wind speed decreased from around 470 km/s to the current values around 380 km/s. Total interplanetary magnetic field strength was below 6.8 nT. The southward magnetic component remained between -4.1 and 4.1 nT. The influence of the equatorial coronal hole that has reached the central meridian on Jan 9 is expected to re-enhance the solar wind parameters on Jan 13.

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 on Jan 13. 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 03 stations.

Solar indices for 11 Jan 2019

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	006
AK Wingst	007
Estimated Ap	005
Estimated international sunspot number	000 - Based on 15 stations

Noticeable events summary

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

All times in UTC

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