Viewing archive of Tuesday, 27 November 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Nov 27 1344 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
27 Nov 2018	068	009
28 Nov 2018	067	008
29 Nov 2018	066	006

Bulletin

Solar activity is low, and there were no C-class flares reported today. The only sunspot group observed on the visible side of the solar disc during last several days, NOAA AR 2728 (not numbered by Catania) has almost completely decayed. We do not expect C-class flares or larger in the following days. No Earth directed CMEs were observed during last 24 hours, and the solar protons remained at the background level.

The solar wind speed increased somewhat today and it presently amounts about 370 km/s. The interplanetary magnetic field magnitude is about 6 nT. Large equatorial coronal hole has reached central meridian this morning, and the associated fast solar wind is expected to arrive to the Earth on November 30 or early on December 01. The geomagnetic conditions are presently quiet, and we can expect quiet to unsettled geomagnetic conditions in the coming hours.

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

Solar indices for 26 Nov 2018

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	005
AK Wingst	001
Estimated Ap	001
Estimated international sunspot number	000 - Based on 08 stations

Noticeable events summary

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

All times in UTC

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