Vaata teisipäev, 19 juuli 2016 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2016 Jul 19 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 19 Jul 2016 until 21 Jul 2016
Päikesepursked ehk loited

C-class flares expected, (probability >=50%)

Geomagnetism

Active conditions expected (A>=20 or K=4)

Päikese prootonid

Quiet

10cm fluxAp
19 Jul 2016106005
20 Jul 2016105012
21 Jul 2016104021

Bulletin

The strongest flare of the period was a C1.0 flare in NOAA 2565, peaking at 00:22UT. Both NOAA 2565 and NOAA 2567 remained the most prominent sunspot groups on the solar disk. At the end of the reporting period, a long duration C2 event was in progress over the magnetic separation line between the two regions. No earth-directed coronal mass ejections (CMEs) have been observed.

Further C-class flaring is expected, with a chance on an isolated M-class flare.

Quiet geomagnetic conditions were observed. Solar wind parameters were at nominal values, with wind speed declining further from 410 to 340 km/s. The interplanetary magnetic field (IMF) was mostly directed away from the Sun (positive). A negative coronal hole (CH; latitude +15 degrees) has almost finished its transit over the central meridian (CM).

Quiet to unsettled geomagnetic conditions are expected. The arrival of a high speed stream (HSS) from a negative CH on the southern hemisphere (-25 degrees) is still possible today or on 20 July, which may result in an active geomagnetic episode. On 21 July, the earth-environment may see the arrival of the HSS from the northern CH, as well as the impact from the faint 17 July CMEs.

Today's estimated international sunspot number (ISN): 064, based on 28 stations.

Solar indices for 18 Jul 2016

Wolf number Catania088
10cm solar flux107
AK Chambon La Forêt008
AK Wingst004
Estimated Ap003
Estimated international sunspot number068 - Based on 39 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

Kõik ajad UTC-s

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