Viewing archive of Tuesday, 8 October 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Oct 08 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
08 Oct 2019	068	005
09 Oct 2019	067	006
10 Oct 2019	067	004

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 increased from approximately 350 km/s to 400 km/s (ACE), with some enhancements in the last part of the period. The direction of the interplanetary magnetic field (phi angle) was predominantly directed away from the Sun (positive sector), but switched to the negative sector from 08:00 UT October 8. Bz varied between -5 and +4 nT. Geomagnetic activity was at quiet to unsettled levels, with the Kp index (NOAA) and the local k index (Dourbes) recording values of 1-2 and 1-3, respectively.

Quiet conditions are expected to continue over the next 48 hours with possible isolated unsettled periods, due to the weak influence a negative polarity coronal hole.

Today's estimated international sunspot number (ISN): 000, based on 14 stations.

Solar indices for 07 Oct 2019

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	017
AK Wingst	010
Estimated Ap	008
Estimated international sunspot number	000 - Based on 21 stations

Noticeable events summary

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

All times in UTC

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