Vaata reede, 11 aprill 2014 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2014 Apr 11 1240 UTC

SIDC Forecast

Valid from 1230 UTC, 11 Apr 2014 until 13 Apr 2014
Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
11 Apr 2014145010
12 Apr 2014155016
13 Apr 2014160008

Bulletin

Solar activity has risen significantly during the past 24 hours and seven C-class flares were produced. Most of the flares were originating from the East limb near 15 degrees south. At that latitude, several regions are turning onto the visible side of the solar disk, including Catania sunspot region 24 (NOAA AR 2035). The strongest flare was a C9.4 flare peaking at 11:24 UT on April 11 from sunspot region 24. Further analysis will be needed to determine whether other solar phenomena were associated with this event. The slow partial halo CME with first measurement in LASCO at 0h48 UT of April 10, at most a shock can be expected to arrive. More C-class flares are expected from the active regions that are currently rotating around the East limb. M-class flares are also likely during the next 48 hours. An X-class flare is not excluded, but is not likely. Interplanetary magnetic field measured by ACE currently is variable with a magnitude ranging from 0 to 9 nT and a Bz fluctuating between -5 and +5 nT. Bz is currently negative, resulting in unsettled local geomagnetic conditions (local K=3 at Dourbes). Solar wind speed is around 380 km/s. Magnetic conditions are expected to be quiet to unsettled. At the arrival of the CH high speed stream (from April 12 on) active conditions might be observed.

Today's estimated international sunspot number (ISN): 047, based on 16 stations.

Solar indices for 10 Apr 2014

Wolf number Catania088
10cm solar flux137
AK Chambon La Forêt006
AK Wingst002
Estimated Ap002
Estimated international sunspot number044 - 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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