Просмотр архива за вторник, 30 июня 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2020 Jun 30 1238 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
30 Jun 2020	069	006
01 Jul 2020	070	005
02 Jul 2020	070	005

Bulletin

Solar flaring activity remains low, with only few A class flares reported today. We expect such a low level of the flaring activity to persist in coming hours. During last 24 hours there were no Earth directed CMEs and the solar protons remained at the background level.

The solar wind speed is presently about 340 km/s, and the interplanetary magnetic field magnitude is 3 nT. The in situ observations show the shock wave arrival, this morning at 01:24 UT. The interplanetary magnetic field magnitude showed simultaneous increase with the solar wind speed, density and the temperature. The solar origin of the observed shock is still unclear. The shock observed in situ could have been driven by the weak CME observed on June 24 (weak eruption at about 12:00 UT followed by the coronal dimming was associated with the slow CME observed above the East solar limb) or June 26 (CME of unclear origin observed first in the SOHO LASCO C2 field of view at about 02:29 UT on June 26). Presently the Bz component of the interplanetary magnetic field is positive and no geomagnetic disturbance is reported (K=2 and Kp=2, as reported by Dourbes and NOAA, respectively). The geomagnetic conditions are presently quiet and we expect them to remain so in the coming hours.

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

Solar indices for 29 Jun 2020

Wolf number Catania	000
10cm solar flux	069
AK Chambon La Forêt	///
AK Wingst	003
Estimated Ap	002
Estimated international sunspot number	000 - Based on 34 stations

Noticeable events summary

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

Все время в UTC

<< Перейти на сегодняшнюю страницу обзора