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The Dexes / Funnel Cloud / 482670

Eventdex · Funnel Cloud

WILLIAMSON

482670 · 37.730, -88.930

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The record

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Event typeevent_typeFunnel Cloud
NOAA NCEI event IDncei_event_id482,670
Episode IDepisode_id80,292
Begin UTCbegin_utc2013-11-17T19:08:00+00:00
End UTCend_utc2013-11-17T19:08:00+00:00
StatestateILLINOIS
County/zone typecz_typeC
County/zone namecz_nameWILLIAMSON
Latitudelat37.730
Longitudelon-88.930
End latitudeend_lat37.730
End longitudeend_lon-88.930
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property0.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourcePublic
Episode narrativeepisode_narrativeSupercell thunderstorms developed along a pre-frontal low pressure trough over Missouri and then moved east across southern Illinois. Very strong wind fields coupled with moderate amounts of instability resulted in several supercell thunderstorms, some of which produced tornadoes. The storms moved through the warm sector of a low pressure system characterized by mixed-layer capes around 1000 j/kg. Southerly surface winds transported rich low-level moisture north of the Ohio River, with dew points in the mid 60's. Areas of partial sunshine immediately preceding the convection bolstered instability. The low level wind shear was very strong, with 0 to 1 km storm-relative helicity at or above 500. Strong southerly surface winds ahead of the storms gusted to around 45 mph from Mount Vernon to Carbondale during the midday hours.
Yearyear2,013

Provenance

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Storage: spine

WILLIAMSON — Funnel Cloud — TerraPulse