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The Dexes / Heavy Rain / 311764

Eventdex · Heavy Rain

CAMERON

311764 · 26.134, -97.638

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The record

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Event typeevent_typeHeavy Rain
NOAA NCEI event IDncei_event_id311,764
Episode IDepisode_id51,709
Begin UTCbegin_utc2011-06-22T19:00:00+00:00
End UTCend_utc2011-06-22T21:45:00+00:00
StatestateTEXAS
County/zone typecz_typeC
County/zone namecz_nameCAMERON
Latitudelat26.134
Longitudelon-97.638
End latitudeend_lat26.168
End longitudeend_lon-97.823
Deaths directdeaths_direct0
Deaths indirectdeaths_indirect0
Injuries directinjuries_direct0
Injuries indirectinjuries_indirect0
Damage propertydamage_property0.00K
Damage cropsdamage_crops0.00K
Weather forecast office sourcewfo_sourceEmergency Manager
Episode narrativeepisode_narrativeAn upper level disturbance, sandwiched between a receding upper level ridge across the southwest U.S. and another ridge across Florida and the eastern Gulf of Mexico, drew deep tropical moisture northward from the Bay of Campeche and points south. Meanwhile, a vigorous upper level disturbance across the upper midwest and associated frontal zone extending from the Great Lakes southwest into North Texas helped trigger a thunderstorm complex, which initially surge into the South Texas Plains overnight on the 21st. The complex set off boundaries which sparked intense storms along the Rio Grande and into northwest Tamaulipas and northern Nuevo Leon, M��xico, a little after daybreak on the 22nd. By early afternoon, the combination of the disturbance, daytime heating, advancing outflow from previous storms focused on the Lower Rio Grande Valley. Intense, slow moving thunderstorms formed from Mercedes/Weslaco northeast into Santa Rosa, Harlingen, and Raymondville. The storms would gradually weaken as they edged toward Brownsville. ||On the 23rd, the surface low parked across Cameron County. Old boundaries, a pesky upper disturbance, and some heating into very unstable air triggered another round of tropical torrents from late morning through late afternoon. These rains inundated parts of the Lower Valley with 2 to 4 more inches of rain ��� some which fell in the same spots on the 22nd. ||Two day rainfall totals ranged generally from 3 to 6 inches across the Lower Valley, with peak values in a swath bounded by Weslaco/Progresso northeast to Raymondville, then southeast to Brownsville. Numerous instances of nuisance flooding, worse in areas where drainage was poor or debris had not been cleared from ditches or canals, were reported through the period.
Event narrativeevent_narrativeSlow moving thunderstorms, containing more than an hour of torrential rains, dumped between 3 and 5 inches in western Cameron County during the early and mid afternoon of June 22nd. Numerous instances of nuisance urban flooding were reported, much in the typical poor drainage locations that see flooding with any locally heavy rainfall.||Across the Lower Valley, nuisance flooding of roads, ditches, and even some properties occurred each afternoon. On the 22nd, locally high water was reported in La Feria, Palm Valley/Harlingen, and San Benito. An estimated 5 inches of rain flooded the Mariposa subdivision near La Feria ��� an area which often has poor drainage issues and suffered greatly after Hurricane Dolly. The water rose to around 2 feet in neighborhood roads, closing them but not reaching into structures. On the west side of Harlingen, CoCoRaHS observers reported between 4 and 5.27 inches of rain.
Yearyear2,011

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CAMERON — Heavy Rain — TerraPulse