Het archief bekijken van vrijdag 1 juni 2018

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2018 Jun 01 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
01 Jun 2018	077	029
02 Jun 2018	078	024
03 Jun 2018	078	017

Bulletin

The Sun produced several B flares in the past 24 hours. NOAA AR 2712 has evolved to beta-gamma, and an active region is appearing near the East limb. The chance for a C flare in the next 24 hours is estimated at 60%, mainly from both regions mentioned above.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.

Around 14:15 UT on May 31, the Interplanetary Magnetic Field (IMF) as observed by DSCOVR changed from a positive (away from the Sun) to a negative (towards the Sun) sector, while its magnitude increased from about 4 nT to a maximum value of around 17 nT. Current IMF magnitude values are near 8 nT. Bz fluctuated between positive and negative values, with a minimum value of about -12 nT. Since about 16:00 UT, solar wind speed started rising gradually from about 375 km/s to current values near 620 km/s. This marks the expected arrival of the Corotating Interaction Region (CIR) and high speed stream associated with a negative polarity equatorial coronal hole.

Quiet to active geomagnetic conditions (K Dourbes between 2 and 4; NOAA Kp between 2 and 4) were registered in the past 24 hours. Active to minor storm levels are possible on June 1, 2 and 3 due to the effects of the high speed stream associated with the equatorial coronal hole, with a chance for moderate storm intervals (K Dourbes = 6).

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 025, gebaseerd op 23 stations.

Zon indexen voor 31 May 2018

Wolfgetal Catania	024
10cm zonneflux	077
AK Chambon La Forêt	024
AK Wingst	016
Geschatte Ap	015
Geschat internationaal zonnevlekkengetal	/// - Gebaseerd op /// stations

Overzicht opvallende gebeurtenissen

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

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