Vaata teisipäev, 30 aprill 2013 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2013 Apr 30 1247 UTC

SIDC Forecast

Valid from 1230 UTC, 30 Apr 2013 until 02 May 2013
Päikesepursked ehk loited

Active (M-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
30 Apr 2013151003
01 May 2013155001
02 May 2013158001

Bulletin

Solar activity is on the rise with M class flares likely from NOAA ARs 1731 and 1730. The latter showed quick evolution from yesterday and is it now a beta-gamma-delta region. C flares are expected from NOAA ARs 1732, 1733 and to a lesser extent AR 1734. Warning conditions are raised for protons, due to the position of AR 1730 on the disk and the risk of M class flare. The strongest flare of the last 24 hours was a C5.9 at 2032 UT peak time, in NOAA AR 1730. No CME is associated with this event. We expect mostly quiet conditions for the geomagnetic activity during the next 48 hours. Current conditions are quiet. ACE observations show a slight increase of the solar wind speed and weak excursions of the interplanetary magnetic field.

Today's estimated international sunspot number (ISN): 104, based on 16 stations.

Solar indices for 29 Apr 2013

Wolf number Catania149
10cm solar flux142
AK Chambon La Forêt007
AK Wingst004
Estimated Ap004
Estimated international sunspot number091 - Based on 26 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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