Vaata reede, 17 detsember 2021 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2021 Dec 17 1244 UTC

SIDC Forecast

Valid from 1230 UTC, 17 Dec 2021 until 19 Dec 2021
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
17 Dec 2021118005
18 Dec 2021119005
19 Dec 2021117005

Bulletin

Seven regions are present on the visible solar disk, of which Catania 84/NOAA 2907, Catania 85/NOAA 2906 and Catania 87/NOAA 2909 produced C class flares while newly numbered NOAA 2911 produced a M1.2-class flare on Dec 17 00:39UT. C class flares can be expected and M class flares possible over the next 24 hours.

No Earth directed CMEs were observed in the past 24 hours.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain at nominal levels in the next 24 hours, depending the flaring activity. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold and is expected to have values about this level during the next 24 hours. The greater than 2 MeV electron fluence was at nominal levels in the past 24 hours where it is expected to remain.

Over the past 24 hours, the disturbance in solar wind parameters (ACE+DSCOVR) was waining down. The total magnetic field decreased from 6 to 1 nT, and its southward component, Bz, fluctuated between -4 nT and +5 nT. The solar wind speed dropped to 380 km/s. The interplanetary magnetic field phi angle has been predominantly on the negative sector (directed towards the Sun). Over the next 24 hours, we are expecting the return towards background levels to continue.

Geomagnetic conditions were quiet to unsettled over the past 24 hours (NOAA Kp 0-2 and K-BEL 0-3). Geomagnetic conditions are expected to be quietly to unsettled over the next 24 hours.

Today's estimated international sunspot number (ISN): 103, based on 10 stations.

Solar indices for 16 Dec 2021

Wolf number Catania118
10cm solar flux118
AK Chambon La Forêt014
AK Wingst008
Estimated Ap008
Estimated international sunspot number099 - Based on 17 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
17003900510056N20E70M1.21F88/2911

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

Kõik ajad UTC-s

<< Mine igapäevase ülevaate lehele

Viimane uudis

Toeta SpaceWeatherLive.com-i!

Paljud inimesed külastavad SpaceWeatherLive lehte selleks, et jälgida, mis toimub Päikesel või, kas on oodata virmalisi. Suurema liiklusega on serveri koormus ning maksumus kõrgem. Kui sulle meeldib see, mida me sinu heaks teeme, siis saad sa sellele ka ise natukene kaasa aidata, annetades selle lehe käigus hoidmise ja arendamise heaks. Ette tänades SpeaceWeatherLive meeskond!

Anneta SpaceWeatherLive Pro
Toetage SpaceWeatherLive meie kaupadega
Vaadake meie kaupa

Fakte kosmose ilmast

Viimane X-loide28/03/2025X1.1
Viimane M-loide01/04/2025M2.5
Viimane geomagnetiline torm27/03/2025Kp5 (G1)
Plekivabasid päevi
Viimane päikese plekivaba päev08/06/2022
Kuu keskmine päikeseplekkide arv
veebruar 2025154.6 +17.6
aprill 2025152.5 -2.1
Viimased 30 päeva130.7 -17.9

See päev ajaloos*

Päikesepursked ehk loited
12001X1.77
22017M8.35
31999M6.2
42001M3.57
52017M1.81
DstG
11979-168G4
21960-151G3
31992-105G2
42004-104G2
51994-103G3
*alates 1994

Sotsiaalvõrgustikud