Viewing archive of Tuesday, 21 June 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Jun 21 1232 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Solar protons

Quiet

	10cm flux	Ap
21 Jun 2016	084	013
22 Jun 2016	083	010
23 Jun 2016	083	007

Bulletin

Solar activity was low with X-ray flux remaining below C Level. All the regions on the visible disk are fairly simple, NOAA AR 2558 can produce C-class flares. Two partial halo CMEs occurred in past 24h. The first one on June 20 at 16:36 UT (first seen by LASCO/C2) was backsided, the second one at 04:36 UT today was very slow and originated from NOAA AR 2553 close to the western solar limb (W70), no geomagnetic consequences are expected. Solar wind speed is at 400 km/s. The interplanetary magnetic field intensity at 4 nT. Geomagnetic conditions have been quiet. Active conditions can be expected for the next 48 h, due to a high speed stream from a coronal hole.

Today's estimated international sunspot number (ISN): 023, based on 12 stations.

Solar indices for 20 Jun 2016

Wolf number Catania	037
10cm solar flux	084
AK Chambon La Forêt	009
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	035 - Based on 20 stations

Noticeable events summary

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

All times in UTC

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