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The Dexes / Funnel Cloud / 971420

Eventdex · Funnel Cloud

MARSHALL

971420 · 41.930, -93.070

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The record

Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.

Event typeevent_typeFunnel Cloud
NOAA NCEI event IDncei_event_id971,420
Episode IDepisode_id160,825
Begin UTCbegin_utc2021-07-15T01:15:00+00:00
End UTCend_utc2021-07-15T01:15:00+00:00
StatestateIOWA
County/zone typecz_typeC
County/zone namecz_nameMARSHALL
Latitudelat41.930
Longitudelon-93.070
End latitudeend_lat41.930
End longitudeend_lon-93.070
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property0.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceTrained Spotter
Episode narrativeepisode_narrativeA surface low pressure system was centered over Kansas and Nebraska with attendant warm front draped across north central Iowa. This was bisected by an outflow boundary from morning convection across western Iowa. As morning activity exited the are the atmosphere quickly recovered steep low and mid level lapse rates exceeded 8 C/km with 0-6 km shear over 40 knots. Near the remnant outflow boundary 0-1 km SRH exceeded 150 m2/s2. Storms developed along this boundary and moved east along the warm front, spawning a number of tornadoes across the state. In fact, this is in the top 5 for tornadoes occurring in a single day for the state of Iowa since reliable records began in the 1980s. By evening convection congealed into an MCS, bringing heavy rain to portions of the state. A line of training storms set up north of the Des Moines metro, resulting in localized flash flooding.
Event narrativeevent_narrativeTrained spotter reports a brief funnel cloud 2 miles ESE of Melbourne.
Yearyear2,021

Provenance

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Storage: spine

MARSHALL — Funnel Cloud — TerraPulse