The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Event typeevent_type | Heavy Rain |
|---|---|
| NOAA NCEI event IDncei_event_id | 333,179 |
| Episode IDepisode_id | 55,003 |
| Begin UTCbegin_utc | 2011-07-05T12:00:00+00:00 |
| End UTCend_utc | 2011-07-06T12:00:00+00:00 |
| Statestate | NEBRASKA |
| County/zone typecz_type | C |
| County/zone namecz_name | YORK |
| Latitudelat | 40.942 |
| Longitudelon | -97.485 |
| End latitudeend_lat | 40.942 |
| End longitudeend_lon | -97.485 |
| Deaths directdeaths_direct | 0 |
| Deaths indirectdeaths_indirect | 0 |
| Injuries directinjuries_direct | 0 |
| Injuries indirectinjuries_indirect | 0 |
| Damage propertydamage_property | 0.00K |
| Damage cropsdamage_crops | 0.00K |
| Weather forecast office sourcewfo_source | Public |
| Episode narrativeepisode_narrative | Between the mid-afternoon and late-evening hours on this Wednesday, separate corridors of severe thunderstorms rolled southward across both eastern and western sections of South Central Nebraska. The first and most widespread round of severe storms focused east of the Highway 281 corridor between 4 PM and 8 PM CDT. These initial storms, highlighted by a mostly outflow-dominant supercell, rapidly intensified across Polk County along the leading edge of a weak east-west line of convection sagging southward from northeast Nebraska. For the next several hours, the initial supercell cluster along with subsequent severe multicell storms developing along its outflow boundary dropped south-southeast through several counties, eventually exiting southern Thayer County around 8 PM CDT. Along the way, there were multiple reports of large hail up to golf ball size and damaging winds up to around 70 MPH. Although no tornadoes were reported, a brief funnel cloud was sighted near the York-Seward County line. One of the most notable areas of wind damage occurred in and near Waco in York County, where several trees and large branches were blown down in town, and three grain bins were destroyed a few miles southeast of town. In eastern Nuckolls County, several minutes of large hail resulted in crop damage along a narrow corridor between Oak and Ruskin. In addition to hail and wind, torrential rainfall of 2.5 to around 4 inches fell in a short time across parts of Polk and York Counties. This resulted in localized flash flooding, with water running over a few roads including Highway 81/92 just west of Osceola. ||Around the time the initial corridor of severe storms exited southeast portions of the area, a new east-west line of strong to severe convection flared up well to the northwest, first affecting areas west of Highway 281 and north of Interstate 80. Although this new line of storms eventually dropped southward across the majority of South Central Nebraska, the main focus for severe weather clearly targeted Dawson and Phelps Counties mainly between 9 and 11 PM CDT. Reports from these counties included a roof blown off an outbuilding west of Sumner, and ping pong ball size hail covering Highway 23 between Bertrand and Loomis. In addition, radar-derived products estimated that at least 4 inches of rain might have fallen across northern portions of Dawson County. Although this second round of severe storms weakened around 11 PM CDT, additional non-severe storms continued drifting through portions of South Central Nebraska well into the early morning hours of Thursday the 6th. ||The synoptic and mesoscale environment was quite supportive for southward moving clusters of severe storms, thanks to the combination of a very unstable airmass in the presence of favorable west-northwest flow aloft. Around the time of initial afternoon development in the Polk County area, MLCAPE values were quite high, around 4000 J/kg, in the presence of deep-layer vertical wind shear around 40 knots. Despite a lack of pronounced upper forcing, a corridor of weak shortwave energy spread into Nebraska from the north and west, focused along the northern periphery of a broad ridge centered over the southern United States. At the surface, an east-west quasi-stationary front took shape near the Nebraska-Kansas border during the afternoon. Light easterly breezes north of this boundary allowed low level moisture to pool, with surface dewpoints climbing into the low-mid 70s. |
| Event narrativeevent_narrative | Total rainfall of 3.05 inches fell over the past 24 hours. |
| Yearyear | 2,011 |
Provenance
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Storage: spine