Undated (AP) _ Strong thunderstorms spread over the Northeast on Tuesday with high wind and heavy rain, and tornadoes touched down in Iowa, New Jersey and Texas while cool air plunged temperatures to record lows from the Great Lakes to Texas.

Nine mobile homes were destroyed and seven people injured by a tornado that struck Pampa, Texas. The tornado was part of a line of heavy thunderstorms that rolled across the northern Panhandle.

In Westfield, N.J., a tornado uprooted a 30-foot tree and sent it flying through a house about 4 p.m. Nine other homes in a two-block area were damaged, but no injuries were reported, said police Sgt. Frank Brunelle. About 77,000 customers throughout the state were without electricity after storms knocked down power lines.

An Iowa state trooper reported a tornado on Interstate 380, but there were no immediate reports of damage or injuries.

Thunderstorms in Maryland knocked out power to 20,000 customers of Baltimore Gas & Electric, and lightning caused two fires. At least three people were injured.

A severe thunderstorm watch was posted for much of central and eastern New York state, much of Vermont, eastern Pennsylvania, New Jersey and Delaware.

A flood watch was issued for small streams and poor drainage areas of the Catskills and Otsego County in New York.

Numerous showers and thunderstorms extended from New York state and western New England across the middle Atlantic Coast states into eastern North Carolina.

Wind gusted to 60 mph and torrential rain was reported in western and central sections of Burlington County, N.J., early in the afternoon.

Street flooding was reported in Sidney, N.Y., with street and basement flooding in Palmerton, Pa., the National Weather Service reported.

More than 2 inches of rain drenched Slatington, Pa., in one hour and 2.12 inches fell in a two-hour period at Analomink, Pa., the weather service said.

Thunderstorms produced wind gusting to 50 mph near Rock Hall, Md. Large trees were toppled onto power lines in western Gates County, N.C., nickel-size hail was reported just south of Murfreesboro, N.C.

Thunderstorms also were scattered across the Florida Peninsula. A tornado touched down in Tamarac, in Broward County, during the afternoon but no damage was reported, the weather service said.

Elsewhere, widely scattered showers extended from the Oklahoma Panhandle into Iowa, and scattered thunderstorms developed from southwestern Texas across southern New Mexico.

Tucson, Ariz., continued its string of consecutive 100 degree-plus temperatures to a record 38, with a record high of 108.

Jacksonville, Fla., had temperatures near 100 for a second day, and some 3,500 employees were sent home when the water and air-conditioning system failed in the downtown federal building.

A temperature of 101 degrees was reported Monday at Cecil Field Naval Air Station and 102 at Jacksonville Naval Air Station. Baptist Medical Center and St. Vincent's Medical Center both reported cases in which elderly women were found Monday in homes without air-conditioning; both had body temperatures of 106 degrees but were still alive Tuesday.

But unseasonably cool weather settled across the Plains and the Midwest during the morning.

Record lows included 53 at Dodge City, Kan.; 37 at Duluth, Minn.; 51 at Pueblo, Colo.; 46 at St. Cloud, Minn.; 48 at Wheatridge, Colo., and 60 at Wichita Falls, Texas.

Temperatures around the nation at 3 p.m. EDT ranged from 55 degrees at Marquette, Mich., to 111 at Palm Springs, Calif. The low for the day was 33 degrees at Gunnison, Colo.

For Wednesday, scattered showers and thunderstorms were forecast over the Gulf Coast region, the southern half of the Atlantic Coast, and from Iowa and Wisconsin through Indiana and southern Lower Michigan. Widely scattered thunderstorms were forecast from western Texas across New Mexico and Arizona.

Highs in the upper 60s and 70s were predicted from the upper Mississippi Valley across the Great Lakes and the Ohio Valley into New England, and along the Pacific Coast; near 100 over Nevada and interior sections of California; between 100 and 115 across the desert Southwest; and in the 80s or 90s across most of the rest of the nation.