Het archief bekijken van vrijdag 24 juli 2015

Dagelijks bulletin over zonne- en geomagnetische activiteit van het SIDC

Datum verslag: 2015 Jul 24 1230 UTC

SIDC Prognose

Zonnevlammen

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

Geomagnetisme

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

Proton Flux monitor

Quiet

	10cm flux	Ap
24 Jul 2015	091	013
25 Jul 2015	094	018
26 Jul 2015	097	009

Bulletin

There are currently 4 small sunspot groups visible on the solar disk. NOAA 2389, still close to the southeast limb, seems to show some mixed magnetic polarities. It was the source of the sole C-class flare of the period (C1.0 at 03:12UT). No earth-directed coronal mass ejections (CMEs) were observed.

There's a chance on another isolated C-class flare.

Solar wind speed gradually declined from values between 500 and 550 km/s to its current 400 km/s. Bz fluctuated between -8 and +6 nT. Active episodes were observed between 17:00-21:00UT. A small equatorial positive coronal hole is transiting the central meridian.

Mostly quiet to unsettled geomagnetic conditions are expected, with a chance on an active period in response to the high speed stream from the positive CH on the northern hemisphere.

Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 037, gebaseerd op 15 stations.

Zon indexen voor 23 Jul 2015

Wolfgetal Catania	029
10cm zonneflux	089
AK Chambon La Forêt	021
AK Wingst	023
Geschatte Ap	019
Geschat internationaal zonnevlekkengetal	033 - Gebaseerd op 29 stations

Overzicht opvallende gebeurtenissen

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

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