Vaata esmaspäev, 6 jaanuar 2025 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2025 Jan 06 1256 UTC

SIDC Forecast

Päikesepursked ehk loited

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

Geomagnetism

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

Päikese prootonid

Warning condition (activity levels expected to increase, but no numeric forecast given)

10cm fluxAp
06 Jan 2025168007
07 Jan 2025166007
08 Jan 2025164007

Solar Active Regions and flaring

Solar flaring activity was moderate over the past 24 hours. A total of 11 numbered sunspot groups were identified with SIDC Sunspot Group 360 (NOAA Active Region 3947) remaining the most complex and most active one. The region was decreasing over the past 24 hours, but retained a beta-gamma-delta magnetic type classification and produced three M-class flares, the strongest of which being an M3.1 flare (SIDC Flare 3214), peaking on January 06 at 01:52 UTC. Other notable regions on the visible solar disk are SIDC Sunspot Group 357 (NOAA Active Region 3944) and SIDC Sunspot Group 358 (NOAA Active Region 3945). Both are classified as magnetic type beta and both have decreased in area. The remaining active have been predominantly simple and quiet. The solar flaring activity is likely to remain at moderate levels over the coming days with likely M-class flares and 15% chances for X-flaring.

Krooniaine massiline väljavool

No Earth-directed coronal mass ejections (CMEs) have been detected in the available coronagraph imagery over the past 24 hours. The south-west partial halo CME first detected in SOHO/LASCO-C2 imagery at 18:54 UTC on January 04 is estimated to have an Earth-directed component with an expected glancing blow arrival at Earth early on January 07.

Krooniauk

An extension of the patchy mid-latitude positive polarity coronal hole (SIDC Coronal Hole 85) is crossing the central meridian. An associated high-speed stream (HSS) may arrive at Earth on January 09, possibly mixed with waining ICME and current HSS impacts.

Päikesetuul

Over the past 24 hours the solar wind parameters (ACE and DSCOVR) reflected the waning influence of a high speed stream (HSS) from a positive polarity coronal hole. The interplanetary magnetic field was slightly elevated reaching a maximum value of 10 nT with a minimum Bz of -8 nT. The solar wind speed varied between 484 km/s and 678 km/s. The B field phi angle was predominantly in the positive sector (directed away from the Sun). The solar wind conditions are expected to remain at slightly elevated conditions over the next 24 hours with an expected glancing blow arrival early on January 07. Another enhancement in the solar wind conditions might be expected due to a possible HSS arrival on January 09.

Geomagnetism

The geomagnetic conditions over the past 24 hours were globally unsettled to active with several isolated minor storm intervals registered locally over Belgium between 17h and 20h UTC on January 05. Predominantly unsettled to minor geomagnetic storm conditions are expected for the next 24 hours with low chances for an isolated moderate geomagnetic storm.

Proton flux levels

Over the past 24 hours the greater than 10 MeV GOES proton flux continued its gradual decrease towards background levels. The greater than 10 MeV GOES proton flux is expected to decrease towards nominal levels over the 24 hours with slight chances for new enhancements.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux as measured by GOES 16 and GOES 18 has crossed the 1000 pfu threshold over the past 24 hours and is expected to cross the threshold for longer periods over the next 24 hours. The 24h electron fluence was at nominal levels and is expected to be at the border of nominal to moderate levels in the next 24 hours.

Today's estimated international sunspot number (ISN): 205, based on 04 stations.

Solar indices for 05 Jan 2025

Wolf number Catania///
10cm solar flux169
AK Chambon La Forêt034
AK Wingst028
Estimated Ap028
Estimated international sunspot number184 - Based on 05 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
05152015371543----M2.482/3947III/1
06012901520208N11E30M3.11N82/3947
06033603500354N11E31M1.41F82/3947

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

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