Просмотр архива за пятница, 10 ноября 2017

Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2017 Nov 10 1230 UTC

SIDC Forecast

Солнечные вспышки

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

Geomagnetism

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

Солнечные протоны

Quiet

	10cm flux	Ap
10 Nov 2017	066	017
11 Nov 2017	066	021
12 Nov 2017	069	007

Bulletin

The solar activity is quiet as the solar disc remains spotless; no flares and no active regions have been recorded in past 24 h on the disc. The X-ray flux is expected to remain below C level.

No Earth directed Coronal Mass Ejections have been observed and the solar protons flux remained at background levels over the past 24 hours.

The Earth remained in the fast flow, the speed has decreased up to 550 km/s on Nov 9 abound 17:00 UT before unexpectedly rising again up to a current value of 700 km/s. The interplanetary magnetic field magnitude remained below 7 nT and the Bz component was fluctuating between -6 and 6 nT. The solar wind speed is expected to remain fast as long as the Earth remains in the solar wind flow associated with the high speed stream coming from the coronal hole (that has crossed the central meridian on Nov 4).

Unsettle to disturb geomagnetic conditions were observed (local K Dourbes 2-4, NOAA Kp 3-4). As long as the Earth remains in the fast solar wind flow, further minor to moderate geomagnetic storms cannot be excluded, especially if Bz component remains negative for long period of time.

Today's estimated international sunspot number (ISN): 000, based on 12 stations.

Solar indices for 09 Nov 2017

Wolf number Catania	000
10cm solar flux	066
AK Chambon La Forêt	031
AK Wingst	025
Estimated Ap	025
Estimated international sunspot number	000 - Based on 21 stations

Noticeable events summary

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

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