Vaata kolmapäev, 20 november 2019 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2019 Nov 20 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 20 Nov 2019 until 22 Nov 2019
Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
20 Nov 2019070007
21 Nov 2019070018
22 Nov 2019070009

Bulletin

The solar activity has been at very low levels over the past 24 hours. The Sun is currently spotless and the X-ray flux remains below B-level. However, a compact bright structure, located at low-latitude near the central meridian, has shown some evidence of activity. There is currently a low-latitude positive-polarity patchy coronal hole located in the Western Hemisphere. Solar activity is expected to remain at low levels for the next 24 hours.

No earth-directed coronal mass ejections (CMEs) have been observed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal values.

The solar wind speed has decreased from around 350 to 330 km/s over the past 24 hours. The total magnetic field strength has fluctuated between 1 nT and 4 nT. The Bz component fluctuated around 0 nT, ranging between -3 and +3 nT. Geomagnetic conditions ranged between Kp index 0-1 (NOAA) and local K index 0-2 (Dourbes) over the past 24 hours.

Geomagnetic conditions are expected to increase later today / tomorrow, due to the arrival of the high speed stream (HSS) / CIR related to a patchy low-latitude positive polarity Coronal Hole that passed the central meridian a couple of days ago.

Today's estimated international sunspot number (ISN): 000, based on 14 stations.

Solar indices for 19 Nov 2019

Wolf number Catania///
10cm solar flux///
AK Chambon La Forêt///
AK Wingst///
Estimated Ap///
Estimated international sunspot number000 - Based on 21 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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