Viewing archive of Saturday, 25 April 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2020 Apr 25 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
25 Apr 2020	070	006
26 Apr 2020	070	007
27 Apr 2020	070	007

Bulletin

Solar X-ray flux remained below B level. The small plage region located around S07E45 developed some spots this morning but Solar flaring is overall expected to remain below C level over the next days.

There were no Earth directed Coronal Mass Ejections (CMEs) observed 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 stay at nominal levels. The greater than 2 MeV electron flux has been slightly enhanced over the past 24 hours. The electron flux should be at background values over the next days as Solar wind has returned to a nominal slow Solar wind regime.

Solar wind conditions were near nominal. Solar wind speed overall increased slightly from around 370km/s to around 430 km/s. The total magnetic field was somewhat variable with a maximum of 8nT and a minimum of 1nT. Bz was variable and the magnetic field phi angle was mostly in the negative sector with some excursions into the positive sector. Near nominal Solar wind conditions are expected over the next days.

Geomagnetic conditions were quiet to unsettled (local KDourbes and NOAA Kp 1-3). Quiet geomagnetic conditions are expected over the next days with an occasional unsettled episode possible.

Today's estimated international sunspot number (ISN): 007, based on 17 stations.

Solar indices for 24 Apr 2020

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	///
AK Wingst	012
Estimated Ap	009
Estimated international sunspot number	000 - Based on 33 stations

Noticeable events summary

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

All times in UTC

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