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Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2021 Feb 03 1333 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
03 Feb 2021	074	007
04 Feb 2021	075	007
05 Feb 2021	075	007

Bulletin

Solar activity was at low levels over the past 24 hours. A region has been numbered in the northwest quadrant as NOAA AR 2801, it has beta magnetic field configuration. Solar activity is expected to remain at low levels.

No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraphic imagery.

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu threshold during the past 24 hours. The electron flux is expected to go above this alert level for the next period. The 24h electron fluence was mostly at normal levels, it is expected to increase in the next 24 h.

Over the past 24 hours, the solar wind speed ranged between 500 and 610 km/s. The total magnetic field strength fluctuated between 5 and 10 nT. Bz had a minimum value of -6 nT. The interplanetary magnetic field was directed towards the Sun (negative polarity). The Earth is under the influence of the high-speed solar wind stream associated with the elongated negative polarity coronal hole that began to cross the central meridian on Jan 28. The solar wind speed is expected to remain elevated for the next 24 hours.

Geomagnetic conditions reached active levels (NOAA Kp recorded values between 2-4, local k Dourbes between 1-4). Geomagnetic conditions are expected to be mostly quiet to unsettled, with active periods possible, in the next 24 hours.

Today's estimated international sunspot number (ISN): 008, based on 08 stations.

Solar indices for 02 Feb 2021

Wolf number Catania	013
10cm solar flux	///
AK Chambon La Forêt	///
AK Wingst	///
Estimated Ap	///
Estimated international sunspot number	008 - Based on 18 stations

Noticeable events summary

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

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