Freezing rain air at the surface within the region of high pressure. The warm air from the Gulf of Mexico is often the fuel for freezing precipitation. Freezing rain develops when falling snow encounters a layer of warm air aloft, typically around the 800 mbar (800 hPa) level, causing the snow to melt and become rain. As the rain continues to fall, it passes through a layer of subfreezing air just above the surface and cools to a temperature below freezing (). If this layer of subfreezing air is sufficiently deep, the raindrops may have time to freeze into ice pellets (sleet)
David Sleet lower the legal blood alcohol content (BAC) limit to 0.08 percent for drivers in the United States. This recommendation helped inform the U.S. Congress which mandated states adopt the stricter BAC limit of 0.08 percent by October 2003 or risk losing a portion of their highway funding. By 2004 all 50 states had passed 0.08 percent laws for drivers, making it the new national standard. Dr. Sleet has received numerous public health awards including the following: He has served on the following editorial boards: David Sleet David A. Sleet is an American scientist recognized for championing the application of behavioral