POLK

849774 · 41.700, -93.810

drawing…

The record

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

Event typeevent_type	Lightning
NOAA NCEI event IDncei_event_id	849,774
Episode IDepisode_id	141,499
Begin UTCbegin_utc	2019-08-20T11:19:00+00:00
End UTCend_utc	2019-08-20T11:19:00+00:00
Statestate	IOWA
County/zone typecz_type	C
County/zone namecz_name	POLK
Latitudelat	41.700
Longitudelon	-93.810
End latitudeend_lat	41.700
End longitudeend_lon	-93.810
Deaths directdeaths_direct	0
Deaths indirectdeaths_indirect	0
Injuries directinjuries_direct	0
Injuries indirectinjuries_indirect	0
Damage propertydamage_property	50.00K
Damage cropsdamage_crops	0.00K
Weather forecast office sourcewfo_source	Emergency Manager
Episode narrativeepisode_narrative	Generally speaking, a bit of everything occurred during an overnight/early morning severe mesoscale convective system that rolled across Iowa. The predominant weather revolved around damaging winds and heavy rainfall, though a few instances of severe hail and low end tornadoes were experienced as well. Among the reports, numerous trees were downed, buildings damaged or destroyed from straight line winds or one of the weak tornadoes, and numerous instances of 2 to 4 plus inches of heavy rainfall. \|\|On the setup side of the coin, a lot of factors were in line for the event to potentially be a sustained nocturnal severe weather event. The previous day, the 19th, saw surface high pressure begin to exit the region eastward and allowing southerly return flow to work into eastern Nebraska and western Iowa. Tied in with mid to upper 70 dew points and steep mid-level lapse rates, a large area of 4000 plus J/kg CAPE values developed across eastern Nebraska and western Iowa and slowly built eastward. Additionally, effect bulk shear was consistently in the 40 to 50 kt range and low level shear roughly oriented to expected storm motion. As the evening progressed and the low level jet finally began to ramp up, boosting warm air advection and positive moisture flux, storms began to develop and eventually congeal. Organization, at least with regards to strong to severe criteria, was not immediate, waiting until around 5am local time to produce its first severe report. Severe reports then continued as the system moved southeast over the next 4 plus hours.
Event narrativeevent_narrative	Emergency manager reported a house fire started by lightning.
Yearyear	2,019

Provenance

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Storage: spine