Viewing archive of Saturday, 27 April 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Apr 27 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
27 Apr 2019	067	011
28 Apr 2019	067	007
29 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 360 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 may affect the Earth today, up to active geomagnetic conditions can be expected (although the coronal hole is small and may only cause unsettled conditions).

Today's estimated international sunspot number (ISN): 000, based on 21 stations.

Solar indices for 26 Apr 2019

Wolf number Catania	///
10cm solar flux	067
AK Chambon La Forêt	009
AK Wingst	///
Estimated Ap	005
Estimated international sunspot number	000 - Based on 28 stations

Noticeable events summary

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

All times in UTC

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