Vaata teisipäev, 28 aprill 2015 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2015 Apr 28 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 28 Apr 2015 until 30 Apr 2015
Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
28 Apr 2015100014
29 Apr 2015100016
30 Apr 2015100018

Bulletin

Only three active regions (AR) are visible on the solar disk. Flaring activity was limited to an impulsive C1.9 flare from NOAA AR 2331, peaking at 5:19 UT on April 28. A filament eruption occurred from 2:55 UT, April 28 on near N10E50. Coronagraphic images are not available yet to analyze any associated CME. Further flaring at the C-level is expected. Earth is currently inside a slow solar wind (speed in the range 280-350 km/s). The magnitude of the interplanetary magnetic field (IMF) is stable near 7nT, with a mainly negative Bz and a negative (toward) phi angle. Quiet to unsettled (local K=0 to 3 at Dourbes) geomagnetic conditions were observed and are largely expected to remain so. There is some chance for a few time slots of active (K=4) to minor storm (K=5) conditions, due to an expected flow from a positive polarity coronal hole, on April 29 and 30.

Today's estimated international sunspot number (ISN): 032, based on 17 stations.

Solar indices for 27 Apr 2015

Wolf number Catania///
10cm solar flux108
AK Chambon La Forêt010
AK Wingst007
Estimated Ap006
Estimated international sunspot number035 - 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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