Просмотр архива за пятница, 19 июля 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2019 Jul 19 1231 UTC

SIDC Forecast

Солнечные вспышки

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

Geomagnetism

Quiet (A<20 and K<4)

Солнечные протоны

Quiet

	10cm flux	Ap
19 Jul 2019	066	003
20 Jul 2019	067	005
21 Jul 2019	067	003

Bulletin

Solar activity was at very low levels. The Sun remains spotless and no flares have been observed. 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. Solar activity is expected to remain at very low levels.

The solar wind varied between 340 and 400 km/s (ACE). The Bz varied between -3 and +4 nT. During the first half of the period the interplanetary magnetic field was predominantly directed away from the Sun (positive sector) but switched to be mostly in the negative sector from 23:00 UT July 18. 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.

Quiet geomagnetic conditions are expected to continue with possible isolated unsettled intervals.

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

Solar indices for 18 Jul 2019

Wolf number Catania	000
10cm solar flux	067
AK Chambon La Forêt	008
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	000 - Based on 27 stations

Noticeable events summary

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

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