Vaata neljapäev, 25 aprill 2013 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2013 Apr 25 1244 UTC

SIDC Forecast

Valid from 1230 UTC, 25 Apr 2013 until 27 Apr 2013
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Warning condition (activity levels expected to increase, but no numeric forecast given)

10cm fluxAp
25 Apr 2013115005
26 Apr 2013114004
27 Apr 2013113004

Bulletin

NOAA AR 1726 remains very dynamic. As it rotates over the solar west limb in the coming 24h, it could still produce a large flare before disappearing out of Earth view. The solar wind speed is still increasing as a result of the influence of a recurrent coronal hole. Nevertheless we expect that most of the resulting geomagnetic activity has passed. Hence we predict quiet geomagnetic conditions. A halo CME was observed by SOHO/LASCO first seen in the C2 field of view at April 23 00:48. However as this CME was determined to be back sided, we do not expect geomagnetic consequences.

Today's estimated international sunspot number (ISN): 077, based on 17 stations.

Solar indices for 24 Apr 2013

Wolf number Catania///
10cm solar flux115
AK Chambon La Forêt029
AK Wingst024
Estimated Ap023
Estimated international sunspot number064 - Based on 24 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmRadio burst typesCatania/NOAA
Puuduvad

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

Kõik ajad UTC-s

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