Prohlížíte si archiv úterý 19. února 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2019 Feb 19 1230 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

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

Sluneční protony

Quiet

	10cm flux	Ap
19 Feb 2019	070	005
20 Feb 2019	070	018
21 Feb 2019	070	012

Bulletin

Solar activity was at very low levels. The 15-degrees long filament in former active region NOAA 2733 is stable and currently located near N10E15. No earth-directed coronal mass ejections were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind speed showed a generally declining trend from 370 km/s at the beginning of the period to 330 km/s at the end (DSCOVR). Bz ranged between -3 and +3 nT. The interplanetary magnetic field was predominately directed towards the Sun (negative sector). Geomagnetic activity was at quiet levels.

Mostly quiet geomagnetic conditions are expected until the arrival of the co-rotating interaction region and wind stream from the positive polarity coronal hole later today or on 20 February. This may result in active conditions, with a small chance on an isolated minor storming episode.

Today's estimated international sunspot number (ISN): 000, based on 23 stations.

Solar indices for 18 Feb 2019

Wolf number Catania	000
10cm solar flux	070
AK Chambon La Forêt	008
AK Wingst	007
Estimated Ap	006
Estimated international sunspot number	000 - Based on 31 stations

Noticeable events summary

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

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