Viewing archive of Tuesday, 23 April 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Apr 23 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
23 Apr 2019	069	010
24 Apr 2019	069	013
25 Apr 2019	069	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 370 km/s with interplanetary magnetic fields of 4 nT. Quiet geomagnetic conditions were observed in the past hours. The situation is expected to change in about 24 h due to the arrival of a fast solar wind stream from a negative polarity coronal hole. Active periods can be then observed, with possible isolated minor storm periods.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 22 Apr 2019

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	006
AK Wingst	///
Estimated Ap	004
Estimated international sunspot number	000 - Based on 38 stations

Noticeable events summary

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

All times in UTC

<< Go to daily overview page