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 | 721,180 |
| Episode IDepisode_id | 118,432 |
| Begin UTCbegin_utc | 2017-08-20T04:00:00+00:00 |
| End UTCend_utc | 2017-08-20T10:00:00+00:00 |
| Statestate | NEBRASKA |
| County/zone typecz_type | C |
| County/zone namecz_name | POLK |
| Latitudelat | 41.180 |
| Longitudelon | -97.550 |
| End latitudeend_lat | 41.180 |
| End longitudeend_lon | -97.550 |
| 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 | COOP Observer |
| Episode narrativeepisode_narrative | Numerous thunderstorms rumbled across various portions of South Central Nebraska mainly between 9 p.m. CDT on Saturday the 19th and 5 a.m. on Sunday the 20th. The vast majority of this activity was sub-severe, producing no more than gusty winds, small hail and locally heavy rainfall. However, at least one storm breached severe limits, with several reports of penny to quarter size hail and 50-60 MPH wind gusts in Kearney around 11 p.m. CDT. Rainfall-wise, while most areas measured no more than 0.50-1.50, Polk County was a wetter exception with widespread 2-3 amounts and even 3.14 in Osceola (this brought the 5-day Osceola total up to a notable 10.19). Although at least minor flooding likely occurred in the county, it was not as significant as the event several days prior. ||While isolated severe storms got underway before sunset just outside of the local area in central Nebraska, it was not until nightfall that activity rapidly initiated and expanded in coverage within South Central Nebraska. In the mid-upper levels, forcing was fairly weak in quasi-zonal flow aloft, although a weak disturbance was noted tracking east across the region. Likely the more significant player in rapid nocturnal convective development was the onset of a 30-40 knot southwesterly low level jet evident at 850 millibars. In addition, the airmass was rather unstable, featuring steep mid-level lapse rates and surface dewpoints well into the 60s to around 70 F. Late evening mesoscale analysis featured 2000-2500 J/kg most-unstable CAPE and 30-40 knots of effective deep-layer wind shear. |
| Event narrativeevent_narrative | Overnight rainfall totaled 3.14 in Osceola, bringing the 5-day total up to an impressive 10.19. |
| Yearyear | 2,017 |
Provenance
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