Vaata reede, 12 juuni 2015 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2015 Jun 12 1231 UTC

SIDC Forecast

Valid from 1230 UTC, 12 Jun 2015 until 14 Jun 2015
Päikesepursked ehk loited

M-class flares expected (probability >=50%)

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
12 Jun 2015145014
13 Jun 2015150007
14 Jun 2015155008

Bulletin

About a dozen C-class flares occurred during the past 24 hours, originating from Catania sunspot regions 79, 80 and 87 (NOAA active regions 2360, 2361 and 2367). The largest flare was a C8.3 flare peaking at 14:37 UT on June 11, coming from Catania region 87. Catania region 83 has developed to a beta-gamma region. More C-class flares are expected and quite likely also an isolated M-class flare. Two rather narrow CMEs (first measurements at 11:00 UT and 14:48 UT on June 11 in LASCO/C2) of less than 100 degrees angular width are propagating to the East without any expected geoeffectiveness.

High speed stream effects on Earth are reducing. Solar wind speed has decreased from 600 to 450 km/s, while the magnetic field magnetic was maximally at 5 nT. Geomagnetic conditions are quiet to unsettled (K= 1 to 3), with a single time slot of active levels (K=4) at Dourbes. Geomagnetic conditions might enhance in case of arrival of the June 9 CME, potentially expected today. The arrival of a new high speed stream is expected on June 14 or 15, emanating from a negative polarity equatorial coronal hole.

Today's estimated international sunspot number (ISN): 079, based on 21 stations.

Solar indices for 11 Jun 2015

Wolf number Catania///
10cm solar flux140
AK Chambon La Forêt013
AK Wingst014
Estimated Ap013
Estimated international sunspot number073 - Based on 24 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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