Перегляд архіву понеділок, 29 квітня 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2019 Apr 29 1336 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
29 Apr 2019	068	005
30 Apr 2019	069	008
01 May 2019	069	007

Bulletin

The visible side of the solar disc is spotless. There were no C-class or even B-class flares reported during more than a week. We expect such a low level of the flaring activity to persist in the coming hours. There were no Earth directed CMEs reported during last 24 hours and the solar protons remained at the background level.

The Earth is presently inside the slow solar wind with the speed of about 380 km/s and the interplanetary magnetic field magnitude amounts about 4 nT. The fast solar wind associated with the negative polarity equatorial coronal hole, which reached central meridian in the early morning of April 28, is expected to arrive to the Earth on May 02. The geomagnetic conditions are presently quiet to unsettled (around midnight of April 28, local station at Dourbes reported K=3 and NOAA reported only Kp=2), and we expect such a geomagnetic conditions to continue in the coming hours.

Today's estimated international sunspot number (ISN): 000, based on 22 stations.

Solar indices for 28 Apr 2019

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	///
AK Wingst	///
Estimated Ap	005
Estimated international sunspot number	000 - Based on 23 stations

Noticeable events summary

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

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