Viewing archive of Sunday, 31 March 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Mar 31 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
31 Mar 2019	069	012
01 Apr 2019	069	013
02 Apr 2019	068	007

Bulletin

Solar flaring activity remains very low, without any flares reported during last 24 hours. We expect such a low 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 in situ data indicate possible late arrival of the solar wind, associate with negative polarity equatorial coronal hole which reached central meridian on March 25. The fluctuations of the interplanetary magnetic field started at about 02:40 UT this morning, simultaneously with the increase of the density. The solar wind speed is still low amounting about 410 km/s and the interplanetary magnetic field magnitude is about 6 nT. The geomagnetic conditions are presently unsettled to active, local station at Dourbes reported K=3 and NOAA reported Kp=4 at about 06 UT this morning. We expect unsettled to possibly active geomagnetic conditions in the coming hours.

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

Solar indices for 30 Mar 2019

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	007
AK Wingst	004
Estimated Ap	002
Estimated international sunspot number	000 - Based on 30 stations

Noticeable events summary

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

All times in UTC

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