Het archief bekijken van dinsdag 22 mei 2018

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2018 May 22 1304 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
22 May 2018	070	005
23 May 2018	071	014
24 May 2018	072	008

Bulletin

Solar activity was at low levels. Catania sunspot group 82 (NOAA AR 2710) produced one B2.8 flare peaking at 05:07 UT today. No earth- directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels. Solar activity is expected to be at low levels with some probability for C-class flares. The solar wind speed remained below 400 km/s over the past 24 hrs. Interplanetary magnetic field magnitude remained below 5 nT till 11:00 UT today (recorded by ACE). Later interplanetray magnetic filed magnitude gradually increased till 9 nT, simutaniously Bz component decreased from -2 nT till -5 nT. Solar wind parameters variations may increase from now due to the expected influence of the recurrent positive polarity northern polar coronal hole. Solar wind speeds may increase till about 500 km/s later today or tomorrow (accodring to STEREO data). Geomagnetic conditions have been quiet over the past 24 hrs. Unsettled geomagnetic conditions can be expected today and tomorrow. Isolated episodes of active conditions are also not excluded.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 013, gebaseerd op 23 stations.

Zon indexen voor 21 May 2018

Wolfgetal Catania	013
10cm zonneflux	070
AK Chambon La Forêt	007
AK Wingst	003
Geschatte Ap	003
Geschat internationaal zonnevlekkengetal	011 - Gebaseerd op 28 stations

Overzicht opvallende gebeurtenissen

Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive

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