Viewing archive of Thursday, 28 April 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Apr 28 1230 UTC

SIDC Forecast

Solar flares

C-class flares expected, (probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
28 Apr 2016	093	007
29 Apr 2016	095	007
30 Apr 2016	097	007

Bulletin

Three C-class flares today, the strongest one was a C1.8, all of them originated in NOAA 2535 (Catania 63). More C-class flares are likely.

Geomagnetic conditions have been quiet. The solar wind speed is at 450 km/s with interplanetary magnetic field magnitude around 5 nT. The fast solar wind from a coronal hole will arrive to the Earth in about 48 h. Until then, quiet geomagnetic conditions are expected.

Today's estimated international sunspot number (ISN): 094, based on 20 stations.

Solar indices for 27 Apr 2016

Wolf number Catania	///
10cm solar flux	093
AK Chambon La Forêt	018
AK Wingst	010
Estimated Ap	011
Estimated international sunspot number	081 - Based on 24 stations

Noticeable events summary

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

All times in UTC

<< Go to daily overview page