Vaata esmaspäev, 15 aprill 2024 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2024 Apr 15 1231 UTC

SIDC Forecast

Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Quiet

10cm fluxAp
15 Apr 2024185015
16 Apr 2024187017
17 Apr 2024189024

Solar Active Regions and flaring

Solar flaring activity was at moderate levels, with multiple C-class flares and four M-class flares recorded in the past 24 hours. The largest flare of the period was an impulsive M2.3 flare, peaking at 08:42 UTC on Apr 15, associated with NOAA AR 3634 (beta class). NOAA AR 3639 (beta class), that produced three remaining M-class flares, was the main driver of the flaring activity observed over the past 24 hours. Other regions on the disc have simple configuration of their photospheric magnetic field (alpha and beta) and did not show any significant flaring activity. The solar flaring activity is expected to be at low to moderate levels over the next 24 hours, with C-class flares probable and a chance of M-class flares.

Krooniaine massiline väljavool

No Earth-directed CMEs have been detected in the available coronagraph imagery over the past 24 hours.

Päikesetuul

The solar wind parameters were indicative of a slow solar wind regime. The solar wind speed ranged between 330 and 380 km/s. The interplanetary magnetic field magnitude was below 5 nT. The southward component of the interplanetary magnetic field fluctuated between -4 nT and 4 nT. The magnetic field orientation was predominantly in the negative sector (field directed towards the Sun). Similar solar wind conditions are expected, with a chance for a weak enhancement on Apr 15 - Apr 16 due to the anticipated arrival of CMEs from Apr 11 and Apr 12.

Geomagnetism

Geomagnetic conditions were quiet both globally and locally (NOAA-Kp and K-BEL: 1 to 2) during the last 24 hours. Geomagnetic conditions are expected to remain mostly at quiet levels, with a chance of reaching active levels on Apr 15 - 16 due to potential CMEs arrivals.

Proton flux levels

The greater than 10 MeV proton flux was at nominal levels over the past 24 hours and is expected to remain so for the next 24 hours.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux, as measured by the GOES-16 satellite, remained below the 1000 pfu threshold. It is expected to remain below the threshold during the next 24 hours. The 24 hour electron fluence was at normal levels and is expected to remain at these levels for the following 24 hours.

Today's estimated international sunspot number (ISN): 166, based on 14 stations.

Solar indices for 14 Apr 2024

Wolf number Catania///
10cm solar flux178
AK Chambon La Forêt010
AK Wingst006
Estimated Ap006
Estimated international sunspot number139 - Based on 23 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
15010601180126N34E68M1.7SF--/3639
15071507320738N34E65M1.0SF--/3639
15083808420847N27W29M2.31B50/3634III/2
15092109320942N29E60M1.2SF--/3639

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

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