Vaata reede, 28 juuli 2017 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2017 Jul 28 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 28 Jul 2017 until 30 Jul 2017
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
28 Jul 2017069007
29 Jul 2017069003
30 Jul 2017072008

Bulletin

Solar activity was at very low levels, and is expected to remain so. A barely visible sunspot group (Catania 40) is trying to develop at location N19W01. No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux remained slightly above background levels.

A partial halo CME was detected by CACTus on 28/05:36UT July emanating from behind the northeast limb with a plane-of-the-sky speed near 600 km/s. The source is old active region NOAA 2665 which is currently on the Sun's farside and expected to round the east limb on 31 July. The CME is not directed to Earth, but STEREO-A is likely to be impacted.

Solar wind speed varied steadily between 430-450 km/s until 06UT, when it shifted up to a range between 450 and 490 km/s (DSCOVR). Bz oscillated between -6 and +5 nT during the entire period. The interplanetary magnetic field was mostly directed away from the Sun. A small negative equatorial coronal hole (CH) is transiting the central meridian.

The geomagnetic field was at quiet to unsettled levels, and is expected to remain so. The particle stream associated with the aforementioned CH may start influencing the earth environment late on 30 or on 31 July, with active geomagnetic conditions possible.

Today's estimated international sunspot number (ISN): 000, based on 15 stations.

Solar indices for 27 Jul 2017

Wolf number Catania000
10cm solar flux068
AK Chambon La Forêt012
AK Wingst008
Estimated Ap007
Estimated international sunspot number000 - Based on 25 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

<< 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-loide01/04/2025M2.4
Viimane geomagnetiline torm27/03/2025Kp5 (G1)
Plekivabasid päevi
Viimane päikese plekivaba päev08/06/2022
Kuu keskmine päikeseplekkide arv
veebruar 2025154.6 +17.6
aprill 2025147 -7.6
Viimased 30 päeva128.8 -21.8

See päev ajaloos*

Päikesepursked ehk loited
12001X28.5
22001X2.01
32001X1.59
42014M9.35
52017M8.22
DstG
11960-272G3
21973-173G3
32001-101G1
41976-101G1
51994-96G3
*alates 1994

Sotsiaalvõrgustikud