1.   As the March sun warms the ground, currents of rising and sinking air mix the lower atmosphere, blending momentum from fast winds aloft with slower surface winds.

2.   Before then, high cirrus clouds streaking across the tropical sky had hinted at fast westerly winds aloft.

3.   A few of the storms may contain gusty winds as momentum from fast winds aloft is mixed toward the ground by currents of sinking air within the storms.

4.   A wind shear is a sudden, violent shift in the direction and speed of winds aloft.

5.   Abundant sunshine will stir winds in the lower atmosphere, blending momentum from fast winds aloft with winds near the surface.

6.   By day, currents of rising and sinking air, incited by solar heating, mix momentum from fast winds aloft with weaker surface winds.

7.   Flooding rains are possible with some of the storms as steering winds aloft are quite weak.

8.   Farther east, many small disturbances embedded in the fast winds aloft will lead to unsettled conditions from the Mississippi Valley to the Atlantic coast.

9.   Hurricanes are sensitive storms, often responding to subtle changes in steering winds aloft.

10.   In addition, the lack of clashing winds aloft allows the resulting cyclones to mushroom miles high, the researchers reported.