Viewing archive of Thursday, 25 July 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Jul 25 1230 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
25 Jul 2019	068	006
26 Jul 2019	068	007
27 Jul 2019	068	007

Bulletin

The solar activity has been quiet over the past 24 hours. The sun is currently spotless and the X-ray flux remained below B-level. Solar activity is expected to remain at low levels for the next 24 hours.

No Earth directed coronal mass ejections (CME) were observed over the last 24 hours in the available coronagraph imagery. The greater than 10 MeV proton flux remained at background levels over the past 24 hours and is expected to remain at low levels.

The solar wind speed was mostly stable with values ranging between 375 km/s and 400 km/s (ACE). The total interplanetary magnetic field remained below 6 nT, the Bz component varied between -4 nT and +4 nT. The solar wind parameters might show some small enhancement due to the very mild effect of the small south polar coronal hole wind streams.

Quiet geomagnetic conditions were observed with the Kp index (NOAA) and the local K index (Dourbes) ranging between 0-2 over the past 24 hours.

Today's estimated international sunspot number (ISN): 000, based on 26 stations.

Solar indices for 24 Jul 2019

Wolf number Catania	000
10cm solar flux	068
AK Chambon La Forêt	009
AK Wingst	007
Estimated Ap	005
Estimated international sunspot number	000 - Based on 37 stations

Noticeable events summary

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

All times in UTC

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