Vaata laupäev, 15 veebruar 2014 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2014 Feb 15 1226 UTC

SIDC Forecast

Valid from 1230 UTC, 15 Feb 2014 until 17 Feb 2014
Päikesepursked ehk loited

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

Geomagnetism

Minor storm expected (A>=30 or K=5)

Päikese prootonid

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

10cm fluxAp
15 Feb 2014167017
16 Feb 2014164014
17 Feb 2014158012

Bulletin

There are currently seven numbered sunspot groups on the solar disc, and the most complex one is the Catania sunspot group 36 (NOAA AR 1974) which maintained beta-gamma-delta configuration of its photospheric magnetic field. Two M-class flares were reported in past 24 hours and all of them originated from this active region. The strongest one was M1.8 flare peaking at 12:40 UT on February 14. The flare was associated with CME of angular width of about 60 degrees. No Earth directed CMEs were observed during last 24 hours. The background X-ray flux decreased to a high B-class level. We expect C-class flares and M-class flares, the isolated X-class flare is also still possible but not very probable. Due to the close to the West solar limb position of the Catania sunspot group 36 (NOAA AR 1974) we maintain the warning condition for a proton event. Earth is still inside a slow solar wind with the speed of 350 km/s, and the interplanetary magnetic field magnitude is stable with the current value of about 5 nT. The fast flow, associated with the low-latitude coronal hole in the northern hemisphere (between N20 and N40) which reached the central meridian on February 13 is expected at the Earth late on February 16 or early on February 17. We expect active to minor storm conditions today and tomorrow due to arrival of CMEs from February 11, February 12 and February 13.

Today's estimated international sunspot number (ISN): 081, based on 06 stations.

Solar indices for 14 Feb 2014

Wolf number Catania///
10cm solar flux167
AK Chambon La Forêt006
AK Wingst002
Estimated Ap003
Estimated international sunspot number095 - Based on 12 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
14132113281339----M1.136/1974
14163316391642S13W32M1.0SB20036/1974III/2

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

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