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The Dexes / Heavy Rain / 779568

Eventdex · Heavy Rain

JASPER

779568 · 41.680, -93.020

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The record

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

Event typeevent_typeHeavy Rain
NOAA NCEI event IDncei_event_id779,568
Episode IDepisode_id130,183
Begin UTCbegin_utc2018-09-01T12:00:00+00:00
End UTCend_utc2018-09-02T12:00:00+00:00
StatestateIOWA
County/zone typecz_typeC
County/zone namecz_nameJASPER
Latitudelat41.680
Longitudelon-93.020
End latitudeend_lat41.680
End longitudeend_lon-93.020
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property0.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceAWOS
Episode narrativeepisode_narrativeA weak, relatively stationary, boundary found itself across portions of western and central Iowa during the evening and overnight hours of the 1st into the 2nd. While surface observations were not tremendous, especially for early September, in the upper 70s to mid 80s, SBCAPE values approached 4000+ J/kg in areas of southwest and south-central Iowa concurrent with dew points into the upper 70s. Support for organized storms was marginal to weakly supportive with bulk effective shear generally less than 40 kts and hail CAPE around 800 J/kg. Heavy rain was also favored with the slow moving boundary, expected 850mb jet, and strong moisture advection into the area. ||Resulting weather involved initially discrete cells producing severe hail, quickly morphing into multicellular convection and messier convection as the low level jet began to influence conditions. Early on, severe hail dominated reports, eventually giving way to heavy rainfall and flash flooding. The most impressive reports included up to 2 inch hail on the north side of the Des Moines metro area and heavy rainfall in excess of 6 inches in portions of Poweshiek County.
Event narrativeevent_narrativeNewton Municipal Airport recorded heavy rainfall of 4.14 inches over the last 24 hours.
Yearyear2,018

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JASPER — Heavy Rain — TerraPulse