The record
Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.
| Event typeevent_type | Funnel Cloud |
|---|---|
| NOAA NCEI event IDncei_event_id | 473,906 |
| Episode IDepisode_id | 78,933 |
| Begin UTCbegin_utc | 2013-08-01T23:49:00+00:00 |
| End UTCend_utc | 2013-08-01T23:49:00+00:00 |
| Statestate | NEBRASKA |
| County/zone typecz_type | C |
| County/zone namecz_name | GREELEY |
| Latitudelat | 41.460 |
| Longitudelon | -98.310 |
| End latitudeend_lat | 41.460 |
| End longitudeend_lon | -98.310 |
| 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 | Storm Chaser |
| Episode narrativeepisode_narrative | This Thursday evening featured the most significant severe weather event of mid-late summer 2013 within South Central Nebraska, occurring mainly between 6 pm and midnight CDT as a series of multicell storm clusters with a few embedded supercells sank southward through the area, eventually congealing into a forward-propagating mesoscale convective system (MCS). Although nearly the entire 24-county area observed thunderstorm activity, there were two primary corridors of severe storms. In the west, Dawson County bore the brunt of severe weather with reports of quarter to golf ball size hail and estimated wind gusts up to 80 MPH. Just west of Gothenburg, four empty rail cars were blown over, and in Lexington, two empty semi trailers were toppled. Farther east, a more widespread corridor of severe storms initially entered far northern counties such as Valley, Greeley and Nance, before propagating southeast across the eastern Hall, Hamilton and Clay County areas before weakening. North of Interstate 80 most storm reports were marginally severe, consisting of quarter size hail and wind gusts to around 60 MPH, including a measured 59 MPH gust at Central Nebraska Regional Airport in Grand Island. However, storm mergers resulted in a notable upswing in storm intensity over southern Hamilton and especially Clay County, which was overall hardest-hit from a combination of quarter to golf ball size hail and winds estimated up to 80 MPH. This combo resulted in a significant swath of crop destruction, with radar data and limited reports suggesting that the worst crop damage extended roughly 30 miles from southwestern Hamilton County near Giltner through the Harvard, Clay Center and Edgar areas. Other notable storm reports included an irrigation center pivot blown onto Highway 6 southeast of Inland, along with a farm storage shed destroyed in the same area. Farther south, Edgar suffered significant wind damage, especially to trees but also to some structures. A grain bin that blew onto railroad tracks in Edgar was actually struck by a train, shutting down the tracks for several hours (this was the second significant severe weather event to strike Edgar in recent months, following an EF2 tornado on May 27th). Although a few storms during the evening exhibited radar-indicated rotation, and a funnel cloud was reported northeast of Wolbach shortly before 7 pm CDT, there were no confirmed tornadoes within the area. In addition to hail and wind, various locations received heavy rainfall of 2-4 inches, although flooding issues were held to a minimum. A few of the highest-known measured storm totals featured 3.90 near Cozad and 3.80 near Edgar. ||Breaking down event timing, several hours prior to the evening main show, an initial series of strong to marginally severe multicell storms developed southward out of north central Nebraska and skirted far northeast portions of the local area mainly between 8 am-noon CDT. The only report from this early activity was nickel size hail at Spalding. Following a multiple-hour lull, clusters of severe storms again built southward into primarily the northeast quadrant of South Central Nebraska between 6-8 pm CDT, a continuation of activity that initially flared up along the South Dakota border earlier in the afternoon. As these eastern storms started to concentrate near the Interstate 80 corridor around 9 pm CDT, a separate cluster of severe storms including an embedded supercell initiated just northwest of the local area over Custer County and dropped slowly southward into Dawson County between 930-11 pm CDT. During this same 930-11 pm CDT time frame, the eastern storms also intensified as multiple cells including another embedded supercell merged into a southward-surging MCS, creating the swath of Clay County damage before steadily weakening along the Nuckolls-Thayer County line. Over time, both the eastern and western convection joined together along a common outflow, gradually losing intensity and drifting southward through southern portions of the area. All thunderstorm activity finally vacated the entire 24-county area around 5 am CDT on the 2nd. On the synoptic scale aloft, this was a fairly weakly-forced event, with an absence of notable shortwave troughs within a west-northwest flow regime sandwiched between an upper ridge centered over the southern High Plains and an expansive low centered near Hudson Bay. However, mid-upper flow was seasonably strong over Nebraska, resulting in a favorable severe weather environment with 0-6 kilometer vertical wind shear around 40 knots during the evening hours. In the low-levels, convergence along a developing east-west warm front was the primary focus for initial afternoon development across northern Nebraska. As these storms propagated/developed southward into the local area, they encountered an unstable air mass featuring most-unstable CAPE values around 2000 J/kg and plenty of low-level moisture, evidenced by surface dewpoints well into the mid-upper 60s F. The southward propagation of convection was also aided by a southerly, 850 millibar low level jet ramping up to around 40 knots. |
| Event narrativeevent_narrative | A cone-shaped funnel was reported. |
| Yearyear | 2,013 |
Provenance
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