气压变化每小时1.5百帕。
不过，在一些位置，由于接近风暴中心的风轻微变向，风速变化多达每小时20公里。
In a few locations, though, the velocities changed by as much as 20 MPH because of minor redirections of the winds near the storm's center.
在比较理想的条件下，每小时10——20颗流星雨可以看到；但是专家们说观测条件变化比较大。
Between 10 and 20 meteors per hour can be visible under ideal conditions; but experts say the shower is fickle.
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