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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2015 Jun 17 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 17 Jun 2015 until 19 Jun 2015
Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
17 Jun 2015136008
18 Jun 2015135007
19 Jun 2015134007

Bulletin

Solar activity was low. Several low level C flares were recorded from Catania group 92 (NOAA 2371). The largest was peaking at C3.2 level at 00:01UT. Catania group 92 (NOAA 2371) and 87 (NOAA 2367) are the most likely sources of flaring activity. Further C level flaring is expected with a slight chance for M class flares. No Earth directed CMEs were recorded. In the decaying phase of the high speed stream, solar wind speed and total magnetic field saw a slight increase around 18:00 UT. Total magnetic field picked up to around 9 nT and speed varied around 560 km/s for a while before resuming their decline. Bz was variable but pronounced negative since midnight, though remaining above -6.5 nT. Geomagnetic conditions continued to be quiet to unsettled (NOAA Kp 2-3) with an isolated local period of active conditions (K Dourbes 1-4). The high speed stream influence is expected to further decline with quiet to unsettled geomagnetic conditions as a consequence.

Today's estimated international sunspot number (ISN): 066, based on 15 stations.

Solar indices for 16 Jun 2015

Wolf number Catania093
10cm solar flux136
AK Chambon La Forêt018
AK Wingst014
Estimated Ap013
Estimated international sunspot number056 - Based on 20 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

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

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