Het archief bekijken van dinsdag 9 juli 2019

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2019 Jul 09 1230 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
09 Jul 2019	067	011
10 Jul 2019	066	007
11 Jul 2019	065	007

Bulletin

No active regions visible on the Sun. No flares observed, nor expected.

No Earth directed CMEs in past 24 h. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 460 km/s with interplanetary magnetic field magnitude of 5 nT. A shock in the solar wind was detected on June 8 around 18:30 UT (18:38 UT at SOHO and 18:29 UT at ACE). DSCOVR data seem to be not available, so we are using a combination of ACE and SOHO, since ACE data are not reliable when the density is very low. The magnetic field jumped from 4 to 10 nT and the solar wind speed from 310 km/s to 380 km/s. It was probably associated with the expected arrival of a weak high speed solar wind stream, probably mixed with an ICME (without clear origin yet). Geomagnetic conditions have reached active levels both locally at Dourbes (from 19:00 UT on July 8 until 01:00 UT on July 9) and at planetary levels (for a 3 hours period starting at 18:00 UT). Unsettled to active conditions can be expected in the next 48 h if the high speed solar wind streams develops further.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 000, gebaseerd op 22 stations.

Zon indexen voor 08 Jul 2019

Wolfgetal Catania	012
10cm zonneflux	067
AK Chambon La Forêt	015
AK Wingst	011
Geschatte Ap	010
Geschat internationaal zonnevlekkengetal	000 - Gebaseerd op 25 stations

Overzicht opvallende gebeurtenissen

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

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