Viewing archive of Tuesday, 15 October 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Oct 15 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
15 Oct 2019	067	005
16 Oct 2019	067	007
17 Oct 2019	067	007

Bulletin

The Sun is spotless and did not produce any flares in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at only 1%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

Solar wind speed near Earth as registered by ACE varied between about 320 and 400 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF) changed to towards the Sun at about 4:40 UT on October 14, probably marking the arrival of a weak solar wind stream associated with the negative polarity coronal hole that crossed the central meridian on October 10. The IMF magnitude varied between about 2 and 8 nT. Bz was never below -5 nT for extended periods.

Quiet geomagnetic conditions (K Dourbes between 0 and 2; NOAA Kp between 1 and 3) were registered in the past 24 hours. Quiet to unsettled geomagnetic levels (K Dourbes < 4) are expected on October 15, 16 and 17.

Today's estimated international sunspot number (ISN): 000, based on 13 stations.

Solar indices for 14 Oct 2019

Wolf number Catania	000
10cm solar flux	066
AK Chambon La Forêt	012
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	000 - Based on 27 stations

Noticeable events summary

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

All times in UTC

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