Het archief bekijken van woensdag 12 juli 2017

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2017 Jul 12 1259 UTC

SIDC Prognose

Zonnevlammen

M-class flares expected (probability >=50%)

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
12 Jul 2017	091	003
13 Jul 2017	090	004
14 Jul 2017	091	012

Bulletin

Solar activity was low with NOAA AR region 2665 (Catania group 36) producing B and C class flares. The strongest C1.2 flare was peaking at 20:31UT yesterday. The group evolved into a Beta-Gamma configuration, however it's magnetic complexity decreased during the period. Few slow and narrow (not Earth directed CMEs) were detected by Cactus during the past 24 hours. A small negative polarity southern coronal hole may create enhanced solar wind conditions on the day 3 (14-Jul-2017). Solar proton flux values are at background levels and expected to remain so. More C-class flares can be expected (and less likely M-flares). Solar wind parameters reflected a fainting influence of a high speed stream from an equatorial coronal hole. Total magnetic field remained below 5 nT, while Bz component was fluctuating between +/-3 nT over the past 24 hours. Solar wind speed gradually decreased from 620 km/s till 510 km/s. Geomagnetic conditions were very quiet. Planetary index Kp decreased from 2 to 1, while the local K index (Dourbes) was fluctuating between 1 and 3 over the past 24 hours. The geomagnetic field is expected to be at quiet levels today and tomorrow, while on the day 3 (14-Jul-2017) active geomagnetic conditions can be expected due to the influence of a small negative polarity southern coronal hole.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 062, gebaseerd op 21 stations.

Zon indexen voor 11 Jul 2017

Wolfgetal Catania	041
10cm zonneflux	091
AK Chambon La Forêt	014
AK Wingst	010
Geschatte Ap	011
Geschat internationaal zonnevlekkengetal	039 - Gebaseerd op 29 stations

Overzicht opvallende gebeurtenissen

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

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