Перегляд архіву вівторок, 1 січня 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2019 Jan 01 1255 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
01 Jan 2019	069	009
02 Jan 2019	069	007
03 Jan 2019	069	008

Bulletin

Solar activity remained at very low levels. The Sun was spotless. No earth-directed coronal mass ejections (CMEs) were observed over the last 24 hours. The greater than 10 MeV proton flux was at nominal values. A negative polarity equatorial coronal hole (CH) started its transit of the central meridian 2 days ago. Solar activity is expected to remain at very low levels. Solar wind speed gradually decreased from about 475 till 425 km/s (DSCOVR). Bz varied between -3.8 and +4.5 nT. Geomagnetic activity ranged from quiet to unsettled conditions. Quiet to unsettled geomagnetic conditions are expected, until the arrival of the wind stream associated with the negative polarity equatorial coronal hole, currently expected for late on 3 or on 4 January.

Today's estimated international sunspot number (ISN): 012, based on 04 stations.

Solar indices for 31 Dec 2018

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	010
AK Wingst	007
Estimated Ap	007
Estimated international sunspot number	/// - Based on /// stations

Noticeable events summary

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

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