Datum verslag: 2015 May 11 1231 UTC
Eruptive (C-class flares expected, probability >=50%)
Minor storm expected (A>=30 or K=5)
Quiet
10cm flux | Ap | |
---|---|---|
11 May 2015 | 165 | 013 |
12 May 2015 | 168 | 031 |
13 May 2015 | 168 | 034 |
NOAA 2339 remains the dominant active region on the visible solar disk. Over the past 24 hours, it produced only low-level C-class flares with the emergence of some opposite polarity flux in its trailing portion. The other sunspot regions were quiet and produced at most a single low- level C-class flare. The strongest flare was a C2.5 flare peaking at 04:09UT (11 May) and was associated to a horseshoe shaped filament eruption located between active regions NOAA 2342 and 2343. Coronagraphic imagery is awaited to assess the presence and direction of any related coronal mass ejection (CME).
Further C-class flaring is expected, with a chance on an M-class flare. Unsettled to active geomagnetic conditions continued in response to the arrival of the 6 May CME. Solar wind speed declined to 350 km/s (18:00UT) and stayed at that level until about 07:00UT when it gradually started to climb to its current 380 km/s. Bz varied between -11 and +15 nT, with a sustained negative period at about -10nT between 19:00 and 02:00UT. The high speed stream of a negative coronal hole is expected to influence the geomagnetic field starting around 12 May.
Active to minor storming conditions are expected on 12 and 13 May.
Het geschatte internationale zonnevlekkengetal (ISN) van vandaag: 112, gebaseerd op 21 stations.
Wolfgetal Catania | /// |
10cm zonneflux | 160 |
AK Chambon La Forêt | 019 |
AK Wingst | 012 |
Geschatte Ap | 013 |
Geschat internationaal zonnevlekkengetal | 109 - Gebaseerd op 28 stations |
Dag | Start | Max | Einde | Locatie | Sterkte | OP | 10cm | Catania/NOAA | Soorten radio-uitbarstingen | |
---|---|---|---|---|---|---|---|---|---|---|
Geen |
Aangeboden door het Solar Influences Data Analysis Center© - SIDC - Verwerkt door SpaceWeatherLive
Alle tijden in UTC
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Actieve geomagnetische condities (Kp4) Drempel bereikt: 19:56 UTC
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Actieve geomagnetische condities (Kp4) Drempel bereikt: 22:34 UTC
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Zonnevlekkenloze dagen | |
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Laatste zonnevlekkenloze dag | 08/06/2022 |
Maandelijks gemiddeld zonnevlekkengetal | |
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