Vaata teisipäev, 14 jaanuar 2025 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2025 Jan 14 1231 UTC

SIDC Forecast

Päikesepursked ehk loited

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

Geomagnetism

Minor storm expected (A>=30 or K=5)

Päikese prootonid

Quiet

	10cm flux	Ap
14 Jan 2025	160	019
15 Jan 2025	162	007
16 Jan 2025	164	021

Solar Active Regions and flaring

Solar flaring activity was low over the past 24 hours with several C-class flares. The largest flare was a C3.4-flare, with peak time 01:46 UTC on Jan 14 2025, from SIDC Sunspot Group 360 NOAA AR 3947 (beta-gamma). There are currently 7 numbered active regions on the visible disk. SIDC Sunspot group 2360 (NOAA AR 3947) is the most complex AR (beta-gamma). The solar flaring activity is expected to be at low levels over the coming day with C-class flares expected and a chance of M-class flares.

Krooniaine massiline väljavool

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

Krooniauk

The large east-west elongated negative polarity equatorial coronal hole (SIDC Coronal Hole 87) is still crossing the central meridian. A high-speed stream from this coronal hole may enhance the solar wind environment near Earth on Jan 16.

Päikesetuul

Over the past 24 hours, the solar wind speed has increased temporarily to 495 km/s, then returned back to around 411 km/s.The interplanetary magnetic field varied between 6 nT and 8 nT, with the Bz reaching a minimum value of -6 nT.

Geomagnetism

Geomagnetic conditions were globally and locally quiet to unsettled (Kp 3 and K Bel 3). Quiet to active conditions with possible isolated minor geomagnetic storm levels are expected for the next 24 hours.

Proton flux levels

The greater than 10 MeV proton flux remained below the 10 pfu threshold and is expected to remain so over the next days.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, and is expected to remain below the threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to remain so.

Today's estimated international sunspot number (ISN): 081, based on 11 stations.

Solar indices for 13 Jan 2025

Wolf number Catania	///
10cm solar flux	160
AK Chambon La Forêt	014
AK Wingst	012
Estimated Ap	011
Estimated international sunspot number	086 - Based on 18 stations

Noticeable events summary

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

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