Viewing archive of Sunday, 13 October 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Oct 13 1231 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
13 Oct 2019	068	005
14 Oct 2019	068	007
15 Oct 2019	067	005

Bulletin

Solar activity was at very low levels, no significant flares have been recorded. The Sun remained spotless. No earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

The solar wind speed gradually decreased from 400 km/s to 340 km/s (ACE). The total magnetic field varied between 1 and 5 nT. The direction of the interplanetary magnetic field (phi angle) was predominantly directed away from the Sun (positive sector), with a prolonged interval in the negative sector from 05:00 to 09:30 UT Oct 13. Bz varied between -3 and +4 nT. Geomagnetic activity quiet, with the Kp index (NOAA) and the local k index (Dourbes) recording values of 0-2.

Quiet conditions are expected, with possible unsettled intervals due to the influence of a negative polarity coronal hole which began to traverse the central meridian on Oct 10.

Today's estimated international sunspot number (ISN): 000, based on 20 stations.

Solar indices for 12 Oct 2019

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	006
AK Wingst	006
Estimated Ap	004
Estimated international sunspot number	000 - Based on 20 stations

Noticeable events summary

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

All times in UTC

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