Vaata neljapäev, 21 mai 2015 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2015 May 21 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 21 May 2015 until 23 May 2015
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
21 May 2015103005
22 May 2015101007
23 May 2015099007

Bulletin

Solar activity was low. A single C flare was reported from NOAA region 2349 (now plage). The C1.2 flare peaked at 7:06UT. All current regions on disk have fairly simple configuration. Quiet conditions are expected with an occasional C flare possible. Yesterdays C1.6 flare did not seem to have any significant CME associated. No Earth directed CME's have been detected in the available coronagraph images. Solar wind conditions reflected the decline of the high speed stream influence with current conditions near nominal. Solar wind speed dropped from around 480 km/s to around 400 km/s. Total magnetic field was below 7nT and currently around 5.5 nT. Bz was mostly negative but remaining above -3.5 nT. Geomagnetic conditions were quiet (NOAA Kp 0-2, while the local Dourbes station currently out of service). Nominal solar wind conditions and associated quiet geomagnetic conditions are expected.

Today's estimated international sunspot number (ISN): 036, based on 17 stations.

Solar indices for 20 May 2015

Wolf number Catania///
10cm solar flux106
AK Chambon La Forêt007
AK Wingst009
Estimated Ap009
Estimated international sunspot number041 - Based on 25 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

Kõik ajad UTC-s

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