Vaata neljapäev, 23 veebruar 2017 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2017 Feb 23 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 23 Feb 2017 until 25 Feb 2017
Päikesepursked ehk loited

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
23 Feb 2017084020
24 Feb 2017084026
25 Feb 2017084008

Bulletin

Catania group 96 (NOAA region 2638) produced the first C flare since the past month, a C4.1 flare peaking at 13:27UT. The amount of mixed polarity field in the middle portion and surroundings of the leading spot has meanwhile diminished. There remains a chance for C flaring from this region. No Earth directed CMEs have been observed in coronagraph data. Proton fluxes are at background levels and expected to remain so.

Since 4:00UT solar wind speed has shown the expected increase under the equatorial coronal hole influence, from around 400 km/s to 450-500 km/s. Total magnetic field increased over the whole period to around 10 nT with Bz variable and not below -5nT. Solar wind conditions are expected to become further enhanced and remain so over the next 48 hours. Geomagnetic conditions were quiet to unsettled (local K Dourbes 1-3, NOAA Kp 1-2). Active periods must be anticipated under the enhanced solar wind conditions with also minor geomagnetic storm periods possible.

Today's estimated international sunspot number (ISN): 024, based on 09 stations.

Solar indices for 22 Feb 2017

Wolf number Catania028
10cm solar flux083
AK Chambon La Forêt012
AK Wingst010
Estimated Ap010
Estimated international sunspot number026 - Based on 16 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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