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The Dexes / Lightning Report (Storm Events) / 849874

Eventdex · Lightning Report (Storm Events)

FILLMORE

849874 · 40.530, -97.600

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The record

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Event typeevent_typeLightning
NOAA NCEI event IDncei_event_id849,874
Episode IDepisode_id140,366
Begin UTCbegin_utc2019-08-26T12:30:00+00:00
End UTCend_utc2019-08-26T12:30:00+00:00
StatestateNEBRASKA
County/zone typecz_typeC
County/zone namecz_nameFILLMORE
Latitudelat40.530
Longitudelon-97.600
End latitudeend_lat40.530
End longitudeend_lon-97.600
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property2.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceEmergency Manager
Episode narrativeepisode_narrativeA complex of strong to severe thunderstorms raced southeastward through mainly the northeast half of South Central Nebraska on this Monday morning, causing a few marginally-severe wind gusts, but mainly just dumping more unwelcomed rain, promoting new flooding issues and/or exacerbating ongoing flooding. The heart of this storm complex tracked along a 20-30 mile wide swath centered from roughly Arcadia-Grand Island-Geneva, entering the Valley/Sherman counties area around 5 a.m. CDT and exiting the Fillmore County area into southeast Nebraska around 8 a.m. CDT. Along the way, the Grand Island airport ASOS measured an official 59 MPH gust and on unofficial mesonet near Polk reported 60 MPH. Ground-truth wind damage reports were quite limited, but several tree branches were downed in McCool Junction. Certainly though, the biggest impact from this event was heavy rainfall/flooding, as most places within the aforementioned swath tallied early morning amounts of 1.00-2.50, with a few higher totals including 3.00 near Cotesfield and 2.69 west of Doniphan. As a result, at least minor flooding of several creeks and rural roads occurred or continued within several local counties, including along the West Fork Big Blue River between Hastings and McCool Junction. Among a few of the more newsworthy flooding impacts, Grand Island not only saw widespread short-term street flooding, but the State Fairgrounds were swamped with several inches of standing water for a few hours, disrupting Day 4 of the Nebraska State Fair. Also in Hall County, ongoing flooding issues at the Amick Acres neighborhood west of Doniphan were worsened, with flooding subsequently persisting for several more days. To put the Hall County hydrologic situation into some numerical perspective, a CoCoRaHS observer near Doniphan measured an incredible 11.91 between Aug. 21-26 and 16.76 for the entire month! At Grand Island airport, the official Aug. 21-26 total was only 5.34, but the monthly total of 11.94 shattered the previous August record of 8.73 in 1977 (normal August rainfall at Grand Island is 3.12). ||Breaking down the meteorological setup, it's worth noting that the primary storm cluster that traversed the local area between 5-8 a.m. CDT was not the only one of the morning, as it was preceded by a less-intense, non-severe batch of storms that roamed over many of the same areas 3-5 a.m. CDT. In the mid-upper levels, the pattern was seasonably-active, as South Central Nebraska resided under northwesterly flow, with shortwave disturbances tracking around the southern periphery of a large-scale trough centered over southern Canada. In the lower levels, convection was fed by warm air/moisture advection on the nose of a 30-35 knot low level jet. At the surface, a weak cold front gradually edged into the local area over the course of the morning. As the main storm complex pushed into South Central Nebraska, the mesoscale environment featured seasonably-strong deep-layer wind shear around 50 knots and 1000-2000 J/kg most-unstable CAPE.
Event narrativeevent_narrativeA lightning strike hit the Fillmore County courthouse and destroyed the flag pole on the top of the building, and also disabled the automatic door system.
Yearyear2,019

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FILLMORE — Lightning Report (Storm Events) — TerraPulse