41.   But, as with most outbreaks of severe weather, the areas affected will tend to be rather small and isolated.

42.   By that measurement, a severe weather pattern is moving through the Forum.

43.   California is more strictly enforcing laws that require four-wheel-drive vehicles to comply with requirements to use chains in certain areas at severe weather.

44.   Climatologists say the jet stream in the upper atmosphere is the source of the severe weather, especially during this lost spring.

45.   Commercial planes are not supposed to fly into severe weather.

46.   Doppler weather radar is the most sophisticated severe weather detection system.

47.   Eastern Montana and the western Dakotas are at especially high risk for severe weather.

48.   Eugene F. Wilcauskas, president of Akzo Nobel America in Chicago, said sales benefited from the severe weather that gripped much of the northern United States last winter.

49.   Even the weakened Asian economy and severe weather this winter in some areas pose minimal long-term threats.

50.   Fierce thunderstorms, with the potential of spawning severe weather, will erupt over the upper Mississippi Valley and then rumble into Illinois and Indiana.