Viewing archive of Saturday, 29 September 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Sep 29 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
29 Sep 2018	068	008
30 Sep 2018	068	008
01 Oct 2018	068	007

Bulletin

Solar activity was very low with X-ray flux remaining below B level and no spots on the visible disk. This is expected to remain so over the next days.

No Earth directed CMEs have been recorded in coronagraph images.

Proton flux levels were at background values and are expected to remain so.

Solar wind conditions were near nominal. Solar wind speed was between 370 and 410 km/s. Total magnetic field saw a jump to 6-8nT just before midnight and remained around 6nT since. Bz was variable and the magnetic field phi angle was in the positive sector. Solar conditions are expected to remain near nominal over the next days.

Geomagnetic conditions were quiet to unsettled (NOAA Kp and local K Dourbes 0-3). Generally, quiet conditions are expected over the next days with occasional unsettled conditions possible.

Today's estimated international sunspot number (ISN): 000, based on 23 stations.

Solar indices for 28 Sep 2018

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	011
AK Wingst	010
Estimated Ap	008
Estimated international sunspot number	000 - Based on 31 stations

Noticeable events summary

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

All times in UTC

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