Vaata laupäev, 14 september 2024 arhiivi

SIDC igapäevane bülletään päikese ja geomagnetilise aktiivsuse kohta

Välja antud: 2024 Sep 14 1232 UTC

SIDC ennustus

Päikesepursked ehk loited

M-class flares expected (probability >=50%)

Geomagnetism

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

Päikese prootonid

Quiet

10 cm voolAp
14 Sep 2024182020
15 Sep 2024178015
16 Sep 2024176011

Päikese aktiivsed piirkonnad ja pursked

Solar flaring activity was high with four M-class flares detected over the past 24 hours. NOAA Active Region (AR) 3825 (magnetic configuration Beta-Gamma, Catania sunspot group no 1) produced all four of these flares: an M1.2 at 13 Sep 15:08 UTC, an M1.4 at 13 Sep 17:56 UTC, an M1.1 at 13 Sep 20:49 UTC, and an M3.0 at 14 Sep 07:41. A fifth peak at M1.1 level was registered by GOES-18 as lasting form 14 Sep 03:10 to 07:22 UTC, however this is most likely not a single event but the combination of numerous C-class flares in close succession. More M-class flaring activity is expected in the next 24 hours, mostly from NOAA AR 3825.

Krooniaine massiline väljavool

A partial halo Coronal Mass Ejection (CME) can be seen in LASCO C2/SOHO images starting from 13 Sep 01:30. This event is associated with an M1.6 flare located at the west solar limb and has an estimated speed of 1250 km/s. A glancing blow is expected to affect the Earth's atmosphere early on 15 Sep. Two back-sided CME can also been seen in LASCO C2/SOHO images starting from 12 Sep 21:30 UTC and 13 Sep 10:10 UTC. As back-sided events, they are not expected to affect Earth.

Päikesetuul

Solar Wind (SW) conditions are gradually returning to a slow SW regime. During the past 24 hours the SW speed dropped from 570 km/s to 380 km/s, while the total interplanetary magnetic field (Bt) ranged between 4 nT and 10 nT. The North-South component of the magnetic field (Bz) varied between -10 and 6 nT and the interplanetary magnetic field phi angle was directed predominately away from the Sun. A High Speed Stream (HSS) is expected to disturb the SW conditions in the next 24 hours.

Geomagnetism

The global geomagnetic conditions reached moderate major storm levels (NOAA Kp 6) during the 13 Sep 21:00-24:00 UTC period. For the rest of the past 24 hours NOAA Kp varied between Kp 3+ and Kp 4+ (unsettled to active). The local geomagnetic conditions were milder and reached minor storm levels (K BEL 5) during the 14 Sep 00:00-03:00 UTC period. For the rest of the past 24 hours conditions ranged between quiet (K BEL 2) and active (K BEL 3) levels. A High Speed Stream (HSS) is expected to become geo-effective in the next 24 hours, but the effect to the geomagnetic conditions is likely to be minor. Unsettled to active conditions are expected to prevail both locally and globally.

Prootoni voo tasemed

The greater than 10 MeV proton flux, as measured by GOES-18, was at nominal levels over the past 24 hours and is expected to remain so.

Elektronivoog geostatsionaarsel orbiidil

The greater than 2 MeV electron flux, as measured by the GOES-18 satellite, exceeded the 1000 pfu threshold for most of the 13 Sep 15:50 UTC to 14 Sep 04:55 UTC period. The peak of the flux was observed to be 7000 pfu at 13 Sep 20:30 UTC. The greater than 2 MeV electron flux is expected to be at increased levels but below the alert threshold level in the next 24 hours. The 24h electron fluence increased significantly during the past 24 hours, however it remained at normal levels (ie below the 5e7 pfu threshold). For the next 24 hours it is expected to remain at normal levels.

Tänane hinnanguline rahvusvaheline päikeselaikude arv (ISN): 118, põhineb 15 jaamadel.

Päikese indeksid 13 Sep 2024

Catania Wolfi number131
10cm päikesevoog186
AK Chambon La Forêt040
AK Wingst032
Hinnanguline Ap033
Hinnanguline rahvusvaheline päikeselaikude arv120 - Põhineb 24 jaamal

Märkimisväärsete sündmuste kokkuvõte

PäevAlgusMaksLõppLokatsioonTugevusOP10cmCatania/NOAARaadiosignaalipursete tüübid
13004600560105----M1.589/3811
13070307080712----M5.289/3811
13023302390244----M1.389/3811
13043704400446S25W54M2.1SF82/3815VI/2
13045805000507----M2.389/3811VI/1
13145615081533S15E67M1.2SF--/3825
13174917561803S14E63M1.4SF--/3825
13204120492055S14E64M1.1SF--/3825
14031004310722----M1.0--/----
14072607410753----M3.001/3825

Andmed on esitanud Päikeseinfektide Andmeanalüüsi Keskus (Solar Influences Data Analysis Center)© - SIDC - Töötleb SpaceWeatherLive

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