Severe

* WHAT...Sub-freezing temperatures as low as 23 possible. * WHERE...Portions of east central, north central, and northeast Colorado. * WHEN...From Wednesday evening through Thursday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold.

* WHAT...Sub-freezing temperatures as low as 25 possible. * WHERE...Portions of central, east central, and southeast Colorado. * WHEN...From late Wednesday night through Thursday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation, and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold!

The National Weather Service in Detroit/Pontiac has issued a Red Flag Warning, which is in effect until 7 PM EDT this evening. * Winds...Southwest 15 to 25 mph with gusts up to 45 mph. * Humidity...As low as 19 percent. Higher relative humidities along the Lake Huron shoreline. * Impacts...Any fires that develop could spread rapidly. Outdoor burning is not recommended. Visit the Michigan DNR website for more information. A Red Flag Warning means that critical fire weather conditions

* Affected Area...Portions of the Hudson Valley FDRA including the following counties: eastern Montgomery, Schenectady, extreme northeastern Schoharie, Albany, Rensselaer, eastern Greene, Columbia, eastern Ulster, Dutchess, and much of Sullivan County. * Timing...From noon to 7 PM Tuesday, with the lowest RH and strongest wind gusts during the mid to late afternoon. * Winds...Southwest at 15 to 20 mph with gusts up to 35 to 40 mph. * Relative Humidity...As low as 25 to 30 percent. * Temperatures...In the upper 70s to low 80s.

* WHAT...Sub-freezing temperatures ranging from 22 F to 28 F degrees. * WHERE...Lander Foothills, Natrona County Lower Elevations, Southwest Bighorn Basin, Wind River Basin, Northeast Johnson County, Southeast Bighorn Basin, Southeast Johnson County, Cody Foothills, and North Bighorn Basin. * WHEN...From late Tuesday night through Wednesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation, and possibly damage unprotected outdoor plumbing.

* WHAT...Sub-freezing temperatures as low as 27 possible. * WHERE...Finney, Grant, Hamilton, Haskell, Kearny, Morton, Stanton, Stevens, Lane, and Scott Counties. * WHEN...From late Wednesday night through Thursday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold.

The National Weather Service in Gaylord has issued a Red Flag Warning, which is in effect until 9 PM EDT this evening. * AFFECTED AREA...Northern lower Michigan. * WIND...Sustained southwest winds 15-25 mph with gusts to 30-45 mph. Locally higher gusts to 50 mph possible across open areas and near the immediate lakeshores. * HUMIDITY...Minimum relative humidities between 15-25 percent across interior northern Michigan and along the Lake Huron shorelines. Higher relative humidities along the Lake Michigan shoreline.

...The Flood Warning is extended for the following rivers in Illinois...Missouri... Mississippi River at Chester. ...The Flood Warning is cancelled for the following rivers in Illinois...Missouri... Mississippi River at Grafton. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Mississippi River at Chester. * WHEN...Until Wednesday afternoon. * IMPACTS...At 28.0 feet, Unleveed islands near Chester and the

...The Flood Warning continues for the following rivers in Illinois...Indiana... Wabash River at Mount Carmel. .Recent periods of heavy rainfall have led to flooding along the Wabash River at Mount Carmel. Flooding will persist through midweek. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Wabash River at Mount Carmel. * WHEN...Until early Wednesday afternoon. * IMPACTS...At 20.0 feet, River is bankfull in all locations. All oil field production ceases with the exception of pumping units on