thecostlyprairiehailstorms:昂贵的草原雹暴.ppt
weather: surviving tornadoes, sandstorms, hailstorms, blizzards
record hailstorms and hailstones in the u.s.
approaching harvest, he says, having lost crops to hailstorms
hailstormscharacteristicsindopplerradarradialvelocityfields