Viewing archive of Monday, 28 November 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Nov 28 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
28 Nov 2016	085	007
29 Nov 2016	084	006
30 Nov 2016	083	003

Bulletin

NOAA 2613, NOAA 2612 and Catania 65 (N05E40) are currently the most prominent sunspot regions on the solar disk. The northern portion of NOAA 2611 was the source of the strongest event of the period, a C1.4 flare at 08:01UT. The region produced also most of the low-level B-class flares, but has now rounded the northwest limb. No earth-directed coronal mass ejections (CMEs) were observed. The greater than 10MeV proton flux was at nominal levels.

Solar flare activity is expected to be at B-class level, with a slight chance on an isolated C-class flare.

Solar wind speed decreased from about 620 km/s to its current values near 450 km/s. Bz fluctuated between -3 nT and +3 nT. The interplanetary magnetic field was mostly directed away from the Sun. Solar wind parameters are expected to further evolve to nominal values as Earth is gradually exiting the high speed stream from the positive coronal hole.

The geomagnetic field was at quiet to unsettled levels, and is expected to remain so.

Today's estimated international sunspot number (ISN): 045, based on 17 stations.

Solar indices for 27 Nov 2016

Wolf number Catania	///
10cm solar flux	083
AK Chambon La Forêt	015
AK Wingst	010
Estimated Ap	010
Estimated international sunspot number	031 - Based on 17 stations

Noticeable events summary

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

All times in UTC

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