Viewing archive of Friday, 26 August 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Aug 26 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
26 Aug 2016	080	006
27 Aug 2016	080	007
28 Aug 2016	079	007

Bulletin

Solar activity was very quiet with 2 B flares from NOAA region 2579. The largest was of magnitude B6.6 peaking at 7:02UT. The region that emerged yesterday was numbered NOAA 2581 and shows further slight overall growth. None of the regions on disk has a particularly complicated structure and X-ray flux is expected to continue to lie below C level, although occurrence of a C flare can not be excluded. Solar proton flux levels were at background values and expected to remain so. No Earth directed CMEs have been observed.

Solar wind showed the decline of the coronal hole high speed stream influence, with solar speed decreasing from 550km/s to around 450 km/s. Total magnetic field was in the 5-7nT range with Bz variable with a maximal southward deflection of around -6nT. A further normalization to nominal solar wind conditions is expected.

Geomagnetic conditions were quiet to unsettled (local K Dourbes 1-3, NOAA Kp 2-3). Over the next 48 hours quiet geomagnetic conditions are expected with unsettled periods possible.

Today's estimated international sunspot number (ISN): 048, based on 23 stations.

Solar indices for 25 Aug 2016

Wolf number Catania	///
10cm solar flux	079
AK Chambon La Forêt	023
AK Wingst	016
Estimated Ap	015
Estimated international sunspot number	050 - 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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