Перегляд архіву четвер, 30 січня 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2020 Jan 30 1231 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
30 Jan 2020	074	003
31 Jan 2020	074	003
01 Feb 2020	073	003

Bulletin

The solar activity was at very low levels over the past 24 hours. No significant solar flares have been observed. Catania sunspot group 28 (NOAA Active Region 2757) has continued to decay. The solar activity is expected to remain at very low levels in the next 24 hours with quiet flaring conditions. No Earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraph imagery. The greater than 10 MeV solar proton flux was at nominal levels and is expected to remain so.

In the past 24 hours the solar wind speed remained slightly enhanced in the range of 350 to 440 km/s. The total magnetic field strength was within 2-7 nT. The Bz component was mostly negative with a minimum value of -5 nT. The interplanetary magnetic field has been predominantly in the negative sector with isolated positive intervals. The solar wind conditions are expected to slowly return to nominal levels over the next 24 hours. Geomagnetic activity has been quiet to unsettled with K Dourbes and NOAA Kp indices in the ranges 1-2 and 1-3, respectively. The geomagnetic conditions are expected to be quiet over the next 24 hours with possible isolated unsettled periods.

Today's estimated international sunspot number (ISN): 011, based on 10 stations.

Solar indices for 29 Jan 2020

Wolf number Catania	///
10cm solar flux	074
AK Chambon La Forêt	013
AK Wingst	010
Estimated Ap	009
Estimated international sunspot number	012 - Based on 23 stations

Noticeable events summary

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

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