Viewing archive of Saturday, 10 August 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Aug 10 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
10 Aug 2019	067	012
11 Aug 2019	067	013
12 Aug 2019	067	006

Bulletin

Solar activity was at very low levels. The Sun was spotless. No earth-directed coronal mass ejections (CME) were observed during the period. The greater than 10 MeV proton flux was at nominal values.

Solar activity is expected to remain at very low levels.

Solar wind intensified once more, starting after 15UT with wind speeds being in the 600-660 km/s range from about 20UT until 03UT (ACE). Solar wind speed then gradually decreased to values between 470 and 500 km/s by the end of the period. Bz varied between -5 and +5 nT. The interplanetary magnetic field (phi angle) remained predominately oriented away from the Sun (positive sector).

Quiet to unsettled geomagnetic conditions were observed, and are expected to continue. K Dourbes recorded an isolated active episode during the 23-02UT interval. The wind stream from an irregular shaped negative polarity coronal hole is expected to arrive late on 10 or on 11 August, which may result in mostly unsettled geomagnetic conditions, an isolated active episode not excluded.

Today's estimated international sunspot number (ISN): 000, based on 19 stations.

Solar indices for 09 Aug 2019

Wolf number Catania	///
10cm solar flux	067
AK Chambon La Forêt	016
AK Wingst	008
Estimated Ap	007
Estimated international sunspot number	000 - Based on 27 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