Environment

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A resident talks on her phone as she watches the Etiwanda Fire in Rancho Cucamonga, Calif., Wednesday, April 30, 2014. The wildfire driven by surging Santa Ana winds sent a choking pall of smoke through foothill neighborhoods, forcing the evacuation of at least 1,650 homes and the closure of at least seven schools. No homes burned, but the smoke prompted mandatory evacuation orders for several areas of town nestled at the base of the San Bernardino Mountains east of Los Angeles. More than 500 firefighters battled the flames near this city of 165,000 people. The fire was reported about 8 a.m., grew to 200 acres by noon, quadrupled in size within a few hours and continued to grow as it roared through dry brush.(AP Photo/Inland Valley Daily Bulletin, Will Lester)

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A woman who is evacuating her home carries a dog to a vehicle in smoke from the Etiwanda Fire in Rancho Cucamonga, Calif., Wednesday, April 30, 2014. The wildfire driven by surging Santa Ana winds sent a choking pall of smoke through foothill neighborhoods, forcing the evacuation of at least 1,650 homes and the closure of at least seven schools. No homes burned, but the smoke prompted mandatory evacuation orders for several areas of town nestled at the base of the San Bernardino Mountains east of Los Angeles. More than 500 firefighters battled the flames near this city of 165,000 people. The fire was reported about 8 a.m., grew to 200 acres by noon, quadrupled in size within a few hours and continued to grow as it roared through dry brush. (AP Photo/Inland Valley Daily Bulletin, Will Lester)

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Firefighter, Brett Thompson, of Clay Township Fire Department station 2, works on a controlled burn of phragmite grass, Monday, April 21, 2014 on Harsens Island, Mich. Officials are taking notice of the efforts in southern St. Clair County to control phragmites _ an invasive weed that chokes out other native plant life, crowds habitats for native species, decreases visibility at roadway intersections, and creates a fire risk. (AP Photo/The Port Huron Times Herald, Andrew Jowett) NO SALES

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Firefighter, Brett Thompson, of Clay Township Fire Department station 2, works on a controlled burn of phragmite grass, Monday, April 21, 2014 on Harsens Island, Mich. Officials are taking notice of the efforts in southern St. Clair County to control phragmites _ an invasive weed that chokes out other native plant life, crowds habitats for native species, decreases visibility at roadway intersections, and creates a fire risk. (AP Photo/The Port Huron Times Herald, Andrew Jowett) NO SALES

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Cars sit on the edge of a sinkhole in the Charles Village neighborhood of Baltimore, Wednesday, April 30, 2014, as heavy rain moves through the region. Road closures have been reported due to flooding, downed trees and electrical lines elsewhere in the Mid-Atlantic. The National Weather Service issued flash flood warnings through Wednesday afternoon in Washington, northern Virginia and central Maryland. (AP Photo)

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Tyson Foods workers continue tornado cleanup at Wilkes Farm,d in Noxapater, Miss., Wednesday, April 30, 2014. The farm raises broilers for Tyson and each house has 28, 500 chickens. Several poultry raising farms near Louisville were damaged or destroyed by tornadoes Monday. (AP Photo/Rogelio V. Solis)

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Tyson Foods workers continue tornado cleanup at Wilkes Farm, an 8-chicken house operation that was leveled in Noxapater, Miss., Wednesday, April 30, 2014. The farm raises broilers for Tyson and each house has 28,500 chickens. Several poultry raising farms near Louisville were damaged or destroyed by tornadoes Monday. (AP Photo/Rogelio V. Solis)

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2Just lumber remains at the site of one of the chicken houses at the Hartness Farms, a 12-chicken house operation that was leveled in Noxapater, Miss., Wednesday, April 30, 2014. The farm was sold on Friday and its new owners were at the farm when a tornado demolished the property and injured them. There were no chickens at the farm. (AP Photo/Rogelio V. Solis)

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Standing amid debris, chicken farmer Cindy Wilkes recalls for her friend Tosha McLemore, how she and her family rode out Monday's tornado that destroyed their Noxapater, Miss., home and flattened their neighboring 8-chicken house farm operation Wednesday, April 30, 2014. The farm raises broilers for Tyson and each house has 28,500 chickens. Several poultry raising farms near Louisville, were either destroyed or damaged by the storms. (AP Photo/Rogelio V. Solis)

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Ventilation fans sit on the ground behind the remains of the Hartness Farms, a 12-chicken house operation that was leveled in Noxapater, Miss., Wednesday, April 30, 2014. The farm was sold on Friday and its new owners were at the farm when a tornado demolished the property and injured them. There were no chickens at the farm. (AP Photo/Rogelio V. Solis)

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Tyson Foods workers continue tornado cleanup at Wilkes Farm, an 8-chicken house operation that was leveled in Noxapater, Miss., Wednesday, April 30, 2014. The farm raises broilers for Tyson and each house has 28,500 chickens. Several poultry raising farms near Louisville were damaged or destroyed by tornadoes Monday. (AP Photo/Rogelio V. Solis)

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Chicken houses remain on both sides of one that was flattened at Pine Ridge Farm by a tornado Monday in Noxapater, Miss., as seen in this photograph taken Wednesday, April 30, 2014. Several poultry farms were damaged by a tornado on Monday. (AP Photo/Rogelio V. Solis)

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Terry Hartness, former owner of Hartness Farm, stands on the slab that was an office as he tells how the new owners held on to a full size refrigerator when a tornado hit the farm, a 12-chicken house operation that was leveled in Noxapater, Miss., Wednesday, April 30, 2014. The farm was sold on Friday and its new owners were at the farm when a tornado demolished the property and injured them. There were no chickens at the farm. (AP Photo/Rogelio V. Solis)