Thunderstorms poured heavy rain on parts of Texas and Oklahoma on Saturday, and the Caribbean's first tropical storm of the season spread rain over Florida.

Slowly moving thunderstorms over the eastern Texas Panhandle and western Oklahoma produced torrential rainfall overnight into Saturday.

More than 9 inches of rain fell in parts of the Texas Panhandle counties of Wheeler and Collingsworth from Friday afternoon to Saturday afternoon.

Interstate 40 was closed briefly during the morning because of high water near Shamrock, 90 miles east of Amarillo, police said.

The outer fringes of Tropical Storm Allison spread rain over parts of central and southwestern Florida on Saturday.

The storm, first of the Atlantic hurricane season, formed early in the day southeast of Cancun, Mexico, and was moving north. Storm warnings were posted for the northeastern coast of Mexico's Yucatan Peninsula and the western tip of Cuba.

Torrential rain fell Saturday over western Cuba, the Cayman Islands and the northeast Yucatan.

Allison was expected to brush the tip of the Yucatan during the night before entering the southeast Gulf of Mexico on Sunday, the National Hurricane Center said.

In the West, rain fell on parts of Nevada and central Utah, which had already been soaked by rain and melting snow.

The rain triggered a mudslide Saturday near Elko, Nev., that closed a road through scenic Lamoille Canyon in the Ruby Mountains. Flooding closed roads in and near the towns of Lamoille and Deeth, both at the base of the Rubies in the Elko area. No injuries were reported.

The mudslide trapped several campers in the canyon and they will have to remain a day or two until the highway is reopened, Elko County sheriff's Sgt. John Fosmo said.

Thunderstorms returned to Colorado, a day after a series of violent storms over the eastern part of the state produced strong lightning and at least one funnel cloud. A flash flood warning was posted along Colorado's section of the South Platte River.

Saturday's temperatures around the lower 48 states ranged from a morning low of 33 at Gunnison and Alamosa, Colo., to an afternoon reading of 91 at Alice, Texas. The highest heat index, a discomfort rating calculated from temperature and humidity, was 122 at Mary Esther, Fla.