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Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2019 Apr 28 1230 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Сонячні протони

Quiet

	10cm flux	Ap
28 Apr 2019	067	007
29 Apr 2019	067	011
30 Apr 2019	067	007

Bulletin

No flares in the past 24 h. No active regions visible on the solar disk. Solar activity is expected to be low.

No Earth directed CMEs in past 24 h. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 350 km/s with interplanetary magnetic field magnitude of 5 nT. Geomagnetic conditions have been quiet. The solar wind emanating from a small negative polarity equatorial coronal hole did not affect the Earth yesterday, but there is yet one more similar coronal hole which associated fast solar wind may affect the Earth in about 24 h, mostly unsettled to active geomagnetic conditions can be expected.

Today's estimated international sunspot number (ISN): 000, based on 14 stations.

Solar indices for 27 Apr 2019

Wolf number Catania	///
10cm solar flux	067
AK Chambon La Forêt	013
AK Wingst	///
Estimated Ap	009
Estimated international sunspot number	000 - Based on 25 stations

Noticeable events summary

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

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