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Denní bulletin o sluneční a geomagnetické aktivitě ze SIDC

Vydáno: 2024 Sep 22 1237 UTC

SIDC Předpověď

Sluneční erupce

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

Geomagnetismus

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm tok	Ap
22 Sep 2024	158	009
23 Sep 2024	160	009
24 Sep 2024	162	008

Slunečně aktivní oblasti a vzplanutí

Solar flaring activity over the past 24 hours remained at low levels. There are eight numbered regions on the visible solar disc with NOAA AR 3828 (beta-gamma) remaining the most complex ones, followed by NOAA AR 3833 (beta-gamma), which exhibited further growth and flux emergence. NOAA AR 3825 (beta-gamma) has exhibited some decay. The strongest activity was a C4.5-flare with peak time 20:46 UTC on Sept 21st, produced by NOAA AR 3831 (beta-gamma). The solar flaring activity is likely to remain at low levels over the coming days with 45% chances of M-class flares and 10% chances for X-class flaring.

Vyhazování koronální hmoty

A filament eruption started on the central meridian in the north-east quadrant around 05:00 UTC on Sept 22nd. No clear coronal dimming or other signatures were observed, apart from a narrow north-west coronal mass ejections (CME) first observed in the LASCO/C2 imagery around 07:00 UTC. Currently analysis suggests no foreseen impact on Earth. No other Earth-directed CMEs have been detected in the available coronagraph imagery over the past 24 hours.

Koronální díra

An equatorial positive polarity coronal hole is residing on the central meridian with small chances for a mild high speed stream arrival at Earth late on Sept 24th or early Sept 25th.

Solární bouře

Over the past 24 hours the solar wind parameters (ACE and DSCOVR) were indicative of background slow solar wind regime. The interplanetary magnetic field was below 7 nT with a minimum Bz of - 6.4 nT. The solar wind velocity smoothly varied between 324 km/s to 448 km/s. The B field phi angle was predominantly in the negative sector (directed towards the Sun). Slow solar wind conditions are expected to continue to be predominantly at slow background solar wind in the upcoming days with chances of a weak connection to a mild high speed stream coming from a positive polarity coronal hole on Sept 24th.

Geomagnetismus

The geomagnetic conditions over the past 24 hours were globally quiet with some unsettled periods registered locally over Belgium. Mostly quiet to unsettled geomagnetic conditions are expected over the next days with small chances for isolated active periods on Sept 24th and Sept 25th, pending a mild high speed stream arrival.

Úrovně protonového toku

Over the past 24 hours the greater than 10 MeV GOES proton flux has been at nominal levels and is expected to remain so over the next 24 hours.

Elektronové toky na geostacionární oběžné dráze

The greater than 2 MeV electron flux as measured by GOES 16 and GOES 18 has exceeded the 1000 pfu threshold over the past 24 hours and is expected to exceed the threshold over the next 24 hours. The 24h electron fluence was at the border of nominal to moderate levels and is expected to increase to moderate levels over the next 24 hours.

Dnešní odhadovaný mezinárodní počet slunečních skvrn (ISN): 143, na základě 09 stanic.

Solární indexy za 21 Sep 2024

Wolfovo číslo Catania	///
10cm sluneční tok	158
AK Chambon La Forêt	009
AK Wingst	007
Odhadovaný Ap	006
Odhadovaný mezinárodní počet slunečních skvrn	131 - Na základě 14 stanic

Souhrn významných událostí

Poskytuje Centrum pro analýzu dat o solárních vlivech© - SIDC - Zpracováno SpaceWeatherLive

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