Просмотр архива за воскресенье, 28 июня 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2020 Jun 28 1241 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
28 Jun 2020	069	005
29 Jun 2020	070	005
30 Jun 2020	070	005

Bulletin

Solar flaring activity was at very low levels. No significant flares have been recorded. Solar activity is expected to remain at very low levels.

No Earth directed Coronal Mass Ejections (CMEs) were observed in the available coronagraphic imagery.

The greater than 10 MeV proton flux was at background levels the past 24 hours. It is expected to remain so in the next 24 hours. The greater than 2 MeV electron flux was at nominal levels over the past 24 hours and is expected to stay at nominal levels for the next 24 hours.

The solar wind speed near Earth varied between 340 and 430 km/s (DSCOVR). The polarity of the Interplanetary Magnetic Field (IMF) was predominantly oriented towards the Sun (phi angle in the negative sector). Bz fluctuated between -4 and +7 nT. The magnitude of the magnetic field varied between 3 and 10 nT. The coronal hole crossing central meridian June 27rd seems to have started dissipating. For the next 24 hours the solar wind speed is expected to remain on those levels, with slight possible enhancements, reflecting the influence of the current patchy solar disk.

The geomagnetic conditions were quiet to unsettled with an isolated active period, while the values registered for the past 24 hours were 1-4 for K Dourbes and 1-3 for NOAA Kp. Quiet to unsettled (K Dourbes = 3) geomagnetic conditions are expected for the next 24 hours.

Today's estimated international sunspot number (ISN): 003, based on 18 stations.

Solar indices for 27 Jun 2020

Wolf number Catania	///
10cm solar flux	069
AK Chambon La Forêt	015
AK Wingst	010
Estimated Ap	011
Estimated international sunspot number	003 - Based on 27 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