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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2016 May 07 1239 UTC

SIDC Forecast

Sluneční erupce

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
07 May 2016	089	013
08 May 2016	088	007
09 May 2016	087	018

Bulletin

Solar activity remains to be low, with only several B-class flares reported. There are currently four numbered sunspot groups visible on the solar disc. Only isolated low C-class flares can be expected in the next 24 hours. No Earth directed CMEs were observed in the last 24 hours.

The solar wind speed has reached maximum value of about 560 km/s around 00:00 UT on May 07, currently it amounts 450 km/s. The interplanetary magnetic field magnitude is presently about 6 nT. Due to fast solar wind and negative value of the Bz component of the interplanetary magnetic field (down to -10 nT), the geomagnetic storm conditions were reported in the evening of May 06 (NOAA reported planetary K index to be 5 and local station at Dourbes reported K=4). The fast flow from the extended equatorial coronal hole which reached central meridian yesterday, is expected at the Earth on May 09, and it might induce active to geomagnetic storm conditions. The geomagnetic conditions are presently quiet and we expect them to remain so in the coming hours.

Today's estimated international sunspot number (ISN): 034, based on 22 stations.

Solar indices for 06 May 2016

Wolf number Catania	064
10cm solar flux	090
AK Chambon La Forêt	028
AK Wingst	018
Estimated Ap	016
Estimated international sunspot number	056 - Based on 31 stations

Noticeable events summary

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

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