Viewing archive of Thursday, 27 April 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2017 Apr 27 1231 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 Apr 2017	079	010
28 Apr 2017	078	009
29 Apr 2017	078	006

Bulletin

There are three active regions, all with alpha configuration of the photospheric magnetic field, presently observed on the visible side of the solar disc. Solar activity is low and only few B-class flares were reported during last 24 hours. We expect solar flaring activity to remain on the same level in the coming hours. No Earth directed CMEs have been observed in the past 24 hours.

Solar wind speed decreased to value of about 450 km/s, and the interplanetary magnetic field magnitude remains on the level of 5nT. During last 48 hours geomagnetic conditions were mostly quiet to unsettled and we expect them to stay so in the coming hours.

Today's estimated international sunspot number (ISN): 026, based on 19 stations.

Solar indices for 26 Apr 2017

Wolf number Catania	046
10cm solar flux	080
AK Chambon La Forêt	014
AK Wingst	010
Estimated Ap	010
Estimated international sunspot number	040 - Based on 26 stations

Noticeable events summary

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

All times in UTC

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