A weak upper level disturbance over the region and a dissipating surface front combined with the seabreeze to produce a small cluster of thunderstorms that developed along the sea breeze near Kenedy County and then raced from northeast to southwest across western Willacy, eastern Hidalgo, and western Cameron counties between 1230 and 2 pm CST before moving into Mexico. A microburst formed as the cluster of storms raced through Weslaco and Mercedes between 135 and 145 pm CST on June 2nd.
At the Weslaco/Mid Valley Airport AWOS, a gust of 53 mph was recorded at 135 PM CDT, as torrential rain was driven sideways and reduced visiblity to one quarter mile for a few minutes. On the tarmac, the first damage occurred when one small plane flipped into another, causing damage to each. An empty trailer was flipped on its side at a local dealership just south of the airport. The most notable damage occurred at a warehouse at the intersection of Business 83 and S. Utah Avenue at approximately 139 PM CST, where much of the tin roof was torn from the building. Diagonally across the street, part of the metal roof at the Economy Inn and Suites was torn off. About one and one half miles south, part of a tin carport was blown into nearby trees and a house in Ranchero Village Mobile Home Park, most likely around 143-145 PM CST.A dilapidated house in Mercedes also lost part of its roof, though wind speed was likely somewhat lower than estimated and observed in Weslaco. Weslaco Police initially estimated at least $100 thousand in property damage; winds were estimated to be 60 to 65 mph based on the photos, descriptions, and prior experience with similar past events in the Rio Grande Valley. Blinding rains in the core of the storm dropped a quick 1.5 to 2.22 inches. Unfortunately, the blinding rains contributed to two vehicle accidents along Expressway 83 between Mercedes and Weslaco. Frequent cloud to ground lightning strikes caused some power outages and started one small fire in a building.

Thunderstorm Wind in HIDALGO, TEXAS
From 02-JUN-13 13:35:00 to 02-JUN-13 13:45:00 (CST-6)
Location: WESLACO MID VLY ARPT
Magnitude: 56.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

At the Weslaco/Mid Valley Airport AWOS, a gust of 53 mph was recorded at 135 PM CDT. Further south, winds were estimated to be 60 to 65 mph based on the photos, descriptions, and prior experience with similar past events in the Rio Grande Valley. On the tarmac, the first damage occurred when one small plane flipped into another, causing damage to each. An empty trailer was flipped on its side at a local dealership just south of the airport. The most notable damage occurred at a warehouse at the intersection of Business 83 and S. Utah Avenue at approximately 139 PM CST, where much of the tin roof was torn from the building. Diagonally across the street, part of the metal roof at the Economy Inn and Suites was torn off. About one and one half miles south, part of a tin carport was blown into nearby trees and a house in Ranchero Village Mobile Home Park, most likely around 143-145 PM CST.A dilapidated house in Mercedes also lost part of its roof, though wind speed was likely somewhat lower than estimated and observed in Weslaco. Weslaco Police initially estimated at least $100 thousand in property damage.