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The Dexes / Heavy Rain / 646327

Eventdex · Heavy Rain

YORK

646327 · 40.860, -97.594

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Event typeevent_typeHeavy Rain
NOAA NCEI event IDncei_event_id646,327
Episode IDepisode_id106,773
Begin UTCbegin_utc2016-07-07T05:00:00+00:00
End UTCend_utc2016-07-07T12:00:00+00:00
StatestateNEBRASKA
County/zone typecz_typeC
County/zone namecz_nameYORK
Latitudelat40.860
Longitudelon-97.594
End latitudeend_lat40.860
End longitudeend_lon-97.594
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property0.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceMesonet
Episode narrativeepisode_narrativePockets of wind damage and/or strong winds occurred with bowing convective line segments on this Wednesday night. Isolated supercells developed over western Nebraska late in the afternoon, with multiple tornadoes, spotty wind damage, and large hail occurring. During the evening hours, cell coverage increased leading to multiple cell mergers. By 9 p.m. CST, this resulted in several lines segments that stretched from Yankton, SD to Broken Bow to McCook. Two small bow echoes tracked through south central Nebraska, from Interstate 80 south to the state line, and another across central Nebraska which affected Valley and Greeley Counties. After 11 p.m. CST, the outflow from extensive thunderstorms over northeast Nebraska sagged to Interstate 80, from York west to Grand Island where it intersected the comma head of the bow echo moving across southern Nebraska. An east-west oriented line of storms developed along Interstate 80. Cell training between 11:30 p.m. and 1 a.m. CST resulted in a swath of 2 to 3 inches of rain from eastern Hamilton County across central York County. The highest rainfall amount was 3.08 inches just east of the city of York. These bow echoes produced multiple measured gusts between 50 and 62 mph. Snapped tree limbs and blown over trees were most extensive in the city of Hastings and the towns of Greeley and Spalding.||A very weak cold front sagged into Nebraska the previous night and was located roughly along the southern state line at daybreak. As the day progressed, the front gradually lifted north as a warm front as low pressure over Wyoming deepened to 1000 mb. In the upper levels, the flow was zonal with the Westerlies confined to the northern third of the United States. A subtropical high was over Texas. 500 mb observations suggest there was a weak/subtle shortwave trough moving across the Central Plains, possibly aiding thunderstorm development. Just prior to thunderstorms moving into south central Nebraska, temperatures were in the middle 70s to lower 80s, and dewpoints ranged from the lower 60s west to the upper 60s east. Yet, mid-level lapse rates were very steep (8 degrees C/km), resulting in MLCAPE between 2000 and 4000 J/kg. Effective deep layer shear was around 50 kts.
Event narrativeevent_narrativeA total of 3.04 inches was measured since midnight.
Yearyear2,016

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YORK — Heavy Rain — TerraPulse