National Weather Service United States Department of Commerce

Flooding Possible due to Rain and Snowmelt

A Flood Watch is in effect from 8 AM Sunday through Midnight Tuesday. Widespread rainfall, between 0.5 and 1 inch, and excessive runoff from snowmelt, between 1 and 2.5+ inches, may result in minor to isolated moderate flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. River ice movement is likely, which may result in isolated ice jams and associated flooding. Read More >

Surface to 1km Lapse Rate

A lapse rate is the rate of temperature change with height. The faster the temperature decreases with height, the "steeper" the lapse rate and the more unstable the atmosphere becomes. Values less than 5.5-6.0 degrees C/km represent stable conditions, while values near 9.5 degrees C/km are considered unstable. Between these values, lapse rates are considered conditionally unstable, meaning that it may become unstable if enough moisture is present. For more information on lapse rates, please click here.