||11/27/2010 03:00:00 CST-6
||11/27/2010 07:30:00 CST-6
||0/0 (fatality details below, when available...)
||A strong cold front surged through Deep South Texas and the Rio Grande Valley the morning after Thanksgiving Day, and was followed by temperatures which had fallen more than 40 degrees from record highs near or above 90 on Thanksgiving into the upper 40s during the mid morning hours of November 26th.
Clear skies, diminishing winds, and a chilly air mass set the stage for rapid overnight cooling on the 27th, and the season's first freeze set in during the pre dawn hours from the Rio Grande Plains to portions of the King Ranch in Kenedy County. Subfreezing temperatures also squeezed into far northern Hidalgo County, which was not included based on both of the following criteria: less than one half of the county area was not affected by the freeze, or one half of the county population was not affected by the freeze.
||Near calm winds, clear skies, and a dry cool air mass allowed temperatures to fall steadily during the evening and overnight of November 26th and 27th. Low temperatures at Brooks County Airport just southeast of Falfurrias hovered just above 32 degrees, while the cooperative site at the Hollywood Hunting Camp about 2 miles west of town recorded a low of 31 degrees. Proxy locations among many radiational cooling locations on the King Ranch in Kenedy County (Armstrong and east of Sarita) and in northern Hidalgo County (Lower Rio Grande Valley National Wildlife Refuge) had minimum temperatures in the upper 20s, suggesting at least 3 hours of freezing or lower values in much of Brooks County.