Vaata pühapäev, 16 september 2018 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2018 Sep 16 1230 UTC

SIDC Forecast

Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

	10cm flux	Ap
16 Sep 2018	070	008
17 Sep 2018	071	012
18 Sep 2018	070	007

Bulletin

Over the past 24 hours solar activity has been Low. No significant flares have been recorded. There are currently no significant ARs on the solar disk. No Earth directed Coronal Mass Ejections (CMEs) have been detected. The greater than 10MeV proton flux remained at background levels over the past 24 hours. Solar activity is expected to remain low over the next 24 hours with a low probability of C-class flares. The solar wind speed has decreased from around 525 to 420 km/s over the past 24 hours. The total magnetic field strength has fluctuated around 4nT. The Bz component has been mainly negative, fluctuating between -4 and +4 nT. Geomagnetic conditions ranged between Kp index 1-2 (NOAA) and local K index 1-3 (Dourbes) over the past 24 hours. Geomagnetic conditions are expected to be quiet over the next 24 hours. Mostly unsettled geomagnetic conditions can be expected from tomorrow (17 September) due to the expected influences from the negative polarity coronal hole.

Today's estimated international sunspot number (ISN): 000, based on 20 stations.

Solar indices for 15 Sep 2018

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	013
AK Wingst	009
Estimated Ap	009
Estimated international sunspot number	000 - Based on 34 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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