Vaata laupäev, 1 juuni 2024 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2024 Jun 01 1240 UTC

SIDC Forecast

Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
01 Jun 2024186016
02 Jun 2024195011
03 Jun 2024205007

Solar Active Regions and flaring

Solar activity was high over the last 24 hours. The largest flare of the period was an X1.4 flare with peak time 08:48 UTC June 01 from NOAA AR 3697, the most complex region on the disk. This region also produced a X1.1 flare with peak time 22:03 UTC May 31. Two new active regions emerged, newly numbered NOAA AR 3699 and an as yet unnumbered region at S05W30, but both were quiet. NOAA AR 3691 continued to decay and produced C-class flaring activity. NOAA AR3698 also produced C-class flaring activity and grew slightly. The rest of the regions were quiet. The solar flaring activity is expected to be moderate over the next 24 hours with C-class flares expected, M-class flares likely and a chance for further X-class flares.

Krooniaine massiline väljavool

No Earth directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph imagery.

Päikesetuul

The solar wind reflected slow solar wind conditions with speeds between 330 and 380 km/s. The interplanetary magnetic field was stable around 5nT, with a minimum Bz value of -5nT. A mildly enhanced solar wind speed and magnetic field may be possible in the next 24 hours, due to a glancing blow from the partial halo CME on May 29 and the weak influence from the small positive polarity coronal hole which crossed the central meridian on May 29.

Geomagnetism

Geomagnetic conditions were quiet to unsettled levels (NOAA Kp 2 and Local K Bel 3). Geomagnetic conditions are expected to be mostly at quiet to unsettled levels in the next 24 hours, however isolated active to minor storm conditions may be possible on June 01, due to the predicted glancing blow from the May 29 CME.

Proton flux levels

Over the past 24 hours the greater than 10 MeV GOES proton flux was below the 10pfu threshold and is expected to remain so for the next day. There is a slight chance that the proton flux may increase due to strong flaring from NOAA AR 3697, but this is unlikely due to its current position.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux remained below the 1000 pfu threshold as measured by GOES 16. It is expected to remain below this threshold over the next days. The 24-hour electron fluence was at nominal levels. The electron fluence is expected remain at nominal levels over the next days.

Today's estimated international sunspot number (ISN): 197, based on 04 stations.

Solar indices for 31 May 2024

Wolf number Catania158
10cm solar flux179
AK Chambon La Forêt014
AK Wingst012
Estimated Ap012
Estimated international sunspot number155 - Based on 24 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
31215222032209S17E32X1.12B28/3697III/1
01082608480858----X1.428/3697

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

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