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The heat wave and drought are the primary reason for fewer twisters, said Harold Brooks, a research meteorologist at the National Severe Storm Laboratory in Norman, Okla. In a drought, there are fewer thunderstorms from which tornadoes can form. But there's also less wind shear, which storms need to get rotation for tornadoes, said Jeff Masters, meteorology director at Weather Underground. But exchanging tornadoes for drought and extreme heat is not a good trade. Tornadoes typically kill one or two people each July, but the heat waves are killing dozens. "I think heat waves are the most dangerous weather phenomena out there," Masters said. --Seth Borenstein in Washington, D.C. ___ WEEPING WILLOWS The limbs of the weeping willows gracing banks of a lake at the Chicago Botanic Gardens drooped more than usual, and the leaves
-- normally plush and green -- wilted and began to fall after several weeks of unusual heat. Weeping willows are water-loving trees, said Tim Johnson, horticulture director for the botanic gardens: "When things dried down, they responded. The leaves yellowed up and some dropped." Many of the gardens' 2.5 million plants have required extra watering during the summer's triple-digit heat, but the willows were a special case. Groundskeepers have been excessively watering the willows about once a week for about a month, drawing water from several lakes on the property to deluge the roots for about 30 minutes. One tree that was in particularly bad shape required 850 gallons of water, an amount that usually hydrates several miles on the 385-acre reserve, during one watering alone. Still, the foliage wilts. "The damage has been done," Johnson said. --Michelle Nealy in Chicago ___ RESOURCE RATIONING Randy Pettinghill buys water from the city of Morrilton for his farm in the Arkansas River Valley, but this year, the city put a cap on what he could have. It turns on the spigot every third night from 7 p.m. to 7 a.m., and Pettinghill collects as much as he can in lagoons on his property in Arkansas' Conway County. He tries to ration the water, but with the temperature regularly over 100 degrees, he's losing a lot to evaporation. He has wells on his property too. He spent $25,000 to have the second one drilled in July because the first was producing half its normal amount of water. He connected the two, and they still aren't producing enough to keep his corn and soybeans irrigated. He left about two-fifths of his 1,700 acres unplanted this year, and he's been pumping water onto the rest, spending $22,000 a month for fuel. "If I run out of water, they'll be dead in two weeks," he said. --Charles Bartels in Little Rock, Ark. ___ CASHING IN For some, the drought will likely be a money-maker -- especially those who fall outside the dry-weather zone. One of those farmers is Harlan Anderson. The rainfall on his 800-acre farm near Cokato in southern Minnesota has been normal, maybe a bit more. That means he'll have alfalfa, corn and soybeans to sell when others don't, and he'll benefit from rising prices. But demonstrating what he described as his Scandinavian sense of reserve, Anderson said he feels a little guilty when talking about how he expects to profit from the misfortune of other farmers in the Upper Midwest. "My projection is that our gross profits for the year will double," Anderson said. "The drought has certainly been good to me. Don't say that too loud." He's started getting frequent calls in recent weeks from livestock farmers around the country. Some usually grow their own feed, while others buy it from farmers like Anderson. All are starting to worry about their supply. "Looking ahead, they're trying to decide if there's a sufficient supply of feed, can they afford it and are they going to keep feeding their dairy cow or their horse
-- or are they going to shoot them?" Anderson said. --Patrick Condon in Minneapolis
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