Просмотр архива за пятница, 6 декабря 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2019 Dec 06 1231 UTC

SIDC Forecast

Солнечные вспышки

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

Geomagnetism

Quiet (A<20 and K<4)

Солнечные протоны

Quiet

	10cm flux	Ap
06 Dec 2019	070	002
07 Dec 2019	071	003
08 Dec 2019	070	005

Bulletin

Solar activity was at very low levels. The visible solar disk was spotless. No earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values. Solar activity is expected to remain at very low levels.

The solar wind speed gradually increased from 320 km/s to 390 km/s (ACE). The interplanetary magnetic field (phi angle) was predominantly directed towards the Sun (negative sector), with some short intervals in the positive sector. Bz varied between -4 and +4 nT.

Geomagnetic activity was quiet, with the Kp index (NOAA) and the local k index (Dourbes) recording values of between 0-2. Quiet conditions are expected on Dec 6 and 7 with possible unsettled conditions from Dec 8, due to the influence from the patchy negative polarity coronal hole that traversed the central meridian on Dec 5.

Today's estimated international sunspot number (ISN): 000, based on 07 stations.

Solar indices for 05 Dec 2019

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	005
AK Wingst	002
Estimated Ap	002
Estimated international sunspot number	000 - Based on 20 stations

Noticeable events summary

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

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