Просмотр архива за пятница, 30 ноября 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2018 Nov 30 1245 UTC

SIDC Forecast

Солнечные вспышки

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

Geomagnetism

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

Солнечные протоны

Quiet

	10cm flux	Ap
30 Nov 2018	068	005
01 Dec 2018	067	017
02 Dec 2018	066	012

Bulletin

There were no B-class or C-class flares reported since November 27 when a low B-class flare was observed. There are presently no active regions observed on the visible side of the solar disc, and therefore we do not expect any flaring activity in the coming days. Rather large prominence, situated at the southern solar hemisphere, erupted this morning at about 03:30 UT. As only two coronagraph images are presently available it is not yet possible to accurately estimate the speed of the associated CME. The prominence was situated rather close to the southern coronal hole and the associated CME is probably directed southward from the Sun-Earth line, and it is therefore not expected to arrive to the Earth. More will be reported when coronagraph data become available. During the last 24 hours the solar protons remained at the background level.

The Earth is still inside the slow solar wind with the speed of about 340 km/s and the interplanetary magnetic field magnitude is about 2 nT. The geomagnetic conditions are presently quiet. We might expect unsettled to active geomagnetic conditions later today and tomorrow due to expected arrival of the fast solar wind associate with the extended coronal hole which reached central meridian on November 27.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 29 Nov 2018

Wolf number Catania	000
10cm solar flux	068
AK Chambon La Forêt	004
AK Wingst	///
Estimated Ap	003
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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