Vaata laupäev, 2 aprill 2016 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2016 Apr 02 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 02 Apr 2016 until 04 Apr 2016
Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
02 Apr 2016081015
03 Apr 2016080034
04 Apr 2016080021

Bulletin

No solar flares were observed over the last 24 hours. Two small sunspots developed during the period, but were gone by about 09UT. NOAA 2526 remained quiet. Filament eruptions were observed on 1 April between 12-14UT (southwest limb) and 16-17UT (south of NOAA 2526), but no earth- directed coronal mass ejections (CMEs) were observed. The x-ray background flux has been below the B1 level since noon of 30 March.

Quiet conditions are expected to continue.

Solar wind speed initially decreased further from about 400 km/s to values near 330 km/s. Around 08UT, a gradual increase set in to speeds near 360 km/s by the end of the period, coinciding with a gradual increase in wind density. Bz varied between -3 and +4 nT. The interplanetary magnetic field was mostly directed away from the Sun. Geomagnetic conditions were quiet. A somewhat elongated negative coronal hole between latitudes +10 and +30 degrees has transited the central meridian and may start influencing the earth environment from 4 April onwards.

Mostly quiet to unsettled geomagnetic conditions are expected until the arrival later today or tomorrow (3 April) of a sector boundary and the co- rotating interaction region ahead of the wind stream from the small negative equatorial coronal hole. This may result in minor geomagnetic storming on 2 and 3 April, with a small chance on moderate storming.

Today's estimated international sunspot number (ISN): 012, based on 13 stations.

Solar indices for 01 Apr 2016

Wolf number Catania023
10cm solar flux082
AK Chambon La Forêt///
AK Wingst003
Estimated Ap003
Estimated international sunspot number013 - 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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