Vaata reede, 2 juuni 2017 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2017 Jun 02 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 02 Jun 2017 until 04 Jun 2017
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
02 Jun 2017076007
03 Jun 2017077017
04 Jun 2017078007

Bulletin

The only spotted region on disk, Catania group 29 (NOAA region 2661) continued to produce several C flares. The strongest was a C3.0 flare peaking at 22:59UT. The region appears relatively complex with mixed polarities in the middle and trailing sections. Further flaring at C level should be anticipated with also a slight probability for an M flare. Several East bound CMEs are visible in SoHO/LASCO C2 coronagraph images related to the activity from region 2661. They are all rather restricted in angular extent and will not influence Earth environment. Proton flux levels are at background values and are expected to remain so. Solar wind saw an increase of solar wind speed together with temperature which is possibly associated with the small equatorial coronal hole crossing the central meridian late May 29. Solar wind speed and temperature started an increase right at the start of the period when also the total magnetic field jumped to peaks of over 9nT. Solar wind speed reached a maximum of close to 450 km/s around 20:30UT when the magnetic field dropped to nominal values of under 5nT. The magnetic field Bz component showed some peaks down to -6.5nT, but did not remain negative for a prolonged time. Solar wind conditions have meanwhile recovered to nominal and are expected to remain so. Geomagnetic conditions have been at active levels locally (local K Dourbes reaching 4 in the afternoon of June 1) due to the slightly enhanced solar wind conditions, but were otherwise quiet to unsettled (NOAA Kp 1-3). Quiet to unsettled geomagnetic conditions are expected over the next 48 hours.

Today's estimated international sunspot number (ISN): 025, based on 21 stations.

Solar indices for 01 Jun 2017

Wolf number Catania015
10cm solar flux076
AK Chambon La Forêt014
AK Wingst010
Estimated Ap008
Estimated international sunspot number015 - Based on 36 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

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