1.   A band of snow will occur near and to the north of the track of a low pressure center as it moves quickly across the northern Ohio Valley.

2.   A few inches of windswept snow will fall across northern Minnesota as a vigorous low pressure center moves across Lake Superior.

3.   A cool rain will fall north of a low pressure center as it moves from the southern Mississippi Valley into the Tennessee Valley.

4.   A cool rain will occur near a low pressure center as it moves from southeastern Michigan to northern New England.

5.   A steady soaking rain will fall north of a low pressure center as moisture-laden air rises above the cool air over the region.

6.   Brisk winds from the northwest around a potent low pressure center in the St. Lawrence Valley will deliver cooler air into the Northeast on Wednesday.

7.   Clouds and a broken area of rain and snow showers will occur in the chilly air near the track of the low pressure center.

8.   Clouds and intermittent rain will occur north of a low pressure center as it moves through the northern Great Lakes states.

9.   Clusters of heavy showers and some thunderstorms will swirl around a low- pressure center as it meanders eastward through the Ohio Valley.

10.   Clusters of heavy thundershowers will concentrate near the low pressure center in northern Alabama in the morning.

n. + center >>共 686
city 6.86%
detention 6.23%
research 3.26%
command 2.34%
distribution 2.28%
treatment 2.18%
trade 2.15%
health 1.85%
control 1.77%
rehabilitation 1.69%
pressure 0.26%
pressure + n. >>共 366
system 27.40%
move 6.52%
defense 3.30%
situation 3.17%
area 3.08%
tactics 2.16%
zone 1.89%
center 1.72%
trough 1.63%
drift 1.28%
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