Viewing archive of Friday, 20 November 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Nov 20 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
20 Nov 2015	109	006
21 Nov 2015	111	007
22 Nov 2015	113	007

Bulletin

Solar activity was very low with X-ray flux remaining below C level. The Catania groups 77 and 78 (NOAA 2454 and 2456) were relatively stable and inactive. Also the new region on the East now numbered Catania 80 (NOAA 2457) remained inactive during the period. Quiet conditions are expected with a possibility for an isolated C flare. No Earth directed CMEs have been recorded in coronagraph data. Solar wind speed further declined towards nominal values from around 430 km/s to around 380 km/s. Total magnetic field increased from 3 nT to 6.5 nT with a peak of 8 nT. Bz was mostly positive but reached a peak under -7nT. Geomagnetic conditions were quiet to unsettled (both local K Dourbes and NOAA Kp 0-3). Nominal solar wind conditions and quiet to unsettled geomagnetic conditions are expected to continue.

Today's estimated international sunspot number (ISN): 055, based on 09 stations.

Solar indices for 19 Nov 2015

Wolf number Catania	///
10cm solar flux	108
AK Chambon La Forêt	008
AK Wingst	008
Estimated Ap	007
Estimated international sunspot number	042 - Based on 16 stations

Noticeable events summary

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

All times in UTC

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