National Weather Service United States Department of Commerce

Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Fig. 15. The combined infrared satellite imagery and regional radar reflectivity mosaic from 2300 UTC 16 July to 0200 UTC 17 July 2003 shows Claudette as it became increasingly disorganized over far southwest Texas. Satellite imagery suggests that the middle and upper level cloud structure became less symmetrical with time as the system weakened and dry air began to entrain into the circulation from the south. Plots of the regional surface observations reveal that Claudette’s low level circulation was becoming displaced from the circulation aloft as it began rapidly moving west-northwest into northern Mexico. In addition, thunderstorms can be seen initiating over the Serranias del Burro Mountains in northern Coahuila, Mexico. This convection trained north over Terrell County, and resulted in heavy rainfall and flash flooding.