National Weather Service United States Department of Commerce

Excessive Rainfall in the Southern Plains into the Lower Mississippi and Upper Midwest

Heavy thunderstorms will continue to produce areas of excessive rainfall and locally considerable flooding over parts of the southern Plains into the mid-Mississippi River Valley through Saturday. Heavy to excessive rainfall may bring flash and urban flooding, along with isolated riverine flooding across portions of the Upper Midwest, mainly over central Minnesota. Read More >

Here are some additional photos of snow rollers found near Medical Lake in eastern Washington on December 30th 2008 courtesy of Ron Trees. While these snow rollers are not as large and well defined as the Camas Prairie snow rollers, it is easier to visualize how each one initially develops with the right combination of wind and snow conditions.

Click on the thumbnails below for a full-size image.

 

Snow Rollers - Click for larger image Snow Rollers - Click for larger image Snow Rollers - Click for larger image
Snow Rollers - Click for larger image Snow Rollers - Click for larger image Snow Rollers - Click for larger image