This outbreak was the deadliest, costliest, and strongest outbreak in Washington,Montana, Orgeon, and Idaho history. The strongest tornado was an EF5 that struck Missoula Montana. Other tornadoes also struck major cities such as two twin EF4 tornadoes that hit Portland Orgeon. Most of the fatalities occured in Missoula when the EF5 killed 132 people. The second deadliest tornado, or tornadoes, were the twin EF4 tornadoes that struck Portland. Those tornadoes killed 124 people. It took 10 years to rebulid Portland and Missoula after the outbreak. The outbreak also left many other cities in ruins.