The development of a mesoscale circulation by the thermal contrast between a fire burned area surrounded by untouched vegetation was simulated by the Regional Atmospheric Modeling System (RAMS) in order to show the circulation's ability to generate clouds and precipitation.

The major storm through the Midwest during the period 26 January to 28 January, 1967 was investigated to determine the cause of the narrow belt of exceedingly heavy snowfall, and to illustrate the relationship between the broad scale air motion and the synoptic and mesoscale precipitation pattern.

A dynamical forecast model is applied to study the moisture variation in the planetary boundary layer under the chosen synoptic condition. The observed 12-hour moisture patterns are compared with the forecast patterns.

For almost a century, W. A. Bentley caught and photographed thousands of snowflakes in his workshop at Jericho, Vermont, and made available to scientists and art instructors samples of his remarkable work. His painstakingly prepared images were remarkable revelations of nature's diversity in uniformity: no two snowflakes are exactly alike, but all are based on a common hexagon. In 1931, the American Meteorological Society gathered the best of Bentley's...