Vaata laupäev, 29 juuli 2023 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2023 Jul 29 1231 UTC

SIDC Forecast

Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Proton event in progress (>10 MeV)

10cm fluxAp
29 Jul 2023171012
30 Jul 2023168005
31 Jul 2023165003

Solar Active Regions and flaring

Solar flaring activity was moderate during the last 24 hours, with an M4 flare produced by NOAA Active Region (AR) 3372 (magnetic type Beta, Catania group 78) yesterday 15:58 UTC. NOAA AR 3390 (magnetic type Alpha) produced two bright C-class flares, a C7 and a C6 during the last 24 hours. The yet-unnamed AR at N14E88 produced another bright C-class flare, a C6 today at 07:34 UTC. For the next 24 hours isolated M-class flares are possible with a small chance of an X-flare.

Krooniaine massiline väljavool

A partial halo Coronal Mass Ejection (CME) was automatically detected by CACTus as launched yesterday 15:48 UTC. It is associated with an M4 flare that took place on the west solar limb and has only a small chance of directly affecting Earth's environment. However, a glancing blow from this CME is to be expected in the first half of 1 Aug. Another partial halo CME can be seen in LASCO-C2 images as launched yesterday 23:12 UTC. This is associated with a large filament eruption that took place at the NE of the solar disk. This second CME is likely to arrive on Earth at the same time as the first as it has a similar speed and was launched with only a few hours difference. Hence, the two CME are expected to be detected as one event at L1.

Päikesetuul

The Solar Wind (SW) conditions were typical of the slow SW regime during the last 24 hours. The SW ranged from 300 km/s to 460 km/s in the last 24 hours. The total interplanetary magnetic field (Bt) varied between 4 and 7 nT and its North-South component (Bz) ranged between -6 and 7 nT. The interplanetary magnetic field phi angle was almost exclusively directed away from the Sun during the past 24 hours. The SW conditions are expected to remain in the slow SW regime in the next 24 hours.

Geomagnetism

Geomagnetic conditions were both globally and locally quiet to unsettled (NOAA Kp 1+ to 3- and K BEL 2 to 3) during the past 24 hours. In the next 24 hours they are expected to become quiet globally and locally with short periods of unsettled conditions locally.

Proton flux levels

The greater than 10 MeV proton flux crossed the 10 pfu threshold yesterday 23:50 UTC and the 100 pfu threshold today at 05:35 UTC. This high-flux event is associated with a Coronal Mass Ejection (CME) that can be see in LASCO/C2 images from 28 Jul 15:48 UTC onwards. The greater than 100 MeV proton flux was unaffected by the CME and has remained at nominal levels. The greater than 10 MeV proton flux is expected to remain around the 100 pfu value for the next 24 hours.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux, as measured by the GOES-16 satellite, reached but not exceeded the 1000 pfu alert threshold and is expected to remain increased but below this threshold during the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so during the next 24 hours.

Today's estimated international sunspot number (ISN): 180, based on 15 stations.

Solar indices for 28 Jul 2023

Wolf number Catania169
10cm solar flux168
AK Chambon La Forêt018
AK Wingst010
Estimated Ap008
Estimated international sunspot number166 - Based on 19 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
28153915581613----M4.186/3376V/3II/2

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