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The Dexes / Heavy Rain / 542370

Eventdex · Heavy Rain

MITCHELL

542370 · 39.470, -98.120

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The record

Everything the slot carries, as measured. Series arrays are drawn above and listed here in full.

Event typeevent_typeHeavy Rain
NOAA NCEI event IDncei_event_id542,370
Episode IDepisode_id88,523
Begin UTCbegin_utc2014-08-31T21:00:00+00:00
End UTCend_utc2014-09-01T05:00:00+00:00
StatestateKANSAS
County/zone typecz_typeC
County/zone namecz_nameMITCHELL
Latitudelat39.470
Longitudelon-98.120
End latitudeend_lat39.470
End longitudeend_lon-98.120
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property0.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceCoCoRaHS
Episode narrativeepisode_narrativeFor a few hours on this Sunday afternoon, a concentrated zone of several strong to severe thunderstorms streamed through eastern portions North Central Kansas, almost exclusively affecting Mitchell and eastern Jewell counties within the local area. Based on a number of storm reports, this was mainly a hail and heavy rain/flooding event, as there were only a few reports of slightly sub-severe wind gusts. Hail-wise, there were several reports of stones ranging from quarter all the way up to tennis ball size, primarily within a 10-mile radius of Beloit, and with stones to at least ping pong ball size falling in the city itself. Overall though, the biggest story of the afternoon ended up being flooding, as the slow-moving, training corridor of intense convection dumped at least 1.50-2.50 of rain over much of Mitchell and far southeastern Jewell counties, with a concentrated zone of higher totals right around 3 centered within and very near Beloit. Given that most of this rain fell within a two-hour period between 4-6 pm CDT, flash flooding ensued in the immediate Beloit area, including water covering portions of Highways 24 and 14. ||In the days and even hours leading up to this event, it appeared that severe thunderstorms might develop farther west and thus pose an overall more widespread and significant threat within the local six-county area. However, a slow-moving, northeast-southwest oriented cold front shifted through most of the area during the day, and by the time convective initiation occurred, this primary low-level convergence zone focused severe storms only within the far-eastern local counties. Timing-wise, severe convection first flared up between 3-4 pm CDT, as seasonably-strong forcing along the front quickly resulted in a messy storm mode with numerous cell mergers and eventually an almost solid line of convection. On a positive note, this storm mode helped prevent the establishment of discrete supercells and a potential tornadic threat. Locally, storm coverage peaked between 400-630 pm CDT, before the main corridor of convection gradually departed southward and eastward into central and northeast Kansas. Although additional thunderstorms affected parts of North Central Kansas well into the night, none of them were severe. ||On the synoptic and mesoscale levels, this was a rather potent late-summer severe weather setup. In the mid and upper levels, a broad, seasonably strong trough shifted eastward out of the Rockies into northern Kansas, accompanied by an upper level jet streak and resultant increase in upper level divergence. Meanwhile, low-level forcing focused along the aforementioned cold front as surface temperatures climbed to around 90 F and dewpoints averaged well into the 60s. Instability and shear parameters were certainly supportive of supercell development along the front, as mixed-layer CAPE climbed into the 2000-3000 J/kg range in the presence of 0-6 kilometer deep layer wind shear around 40 knots.
Event narrativeevent_narrativeStorm-total rainfall of 3.00, the majority of which fell between 4-6 pm CDT.
Yearyear2,014

Provenance

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MITCHELL — Heavy Rain — TerraPulse