Severe

* WHAT...Heavy snow expected. Total snow accumulations between 10 and 18 inches mainly above 9000 ft in elevation and on the northern and eastern sides of the range. * WHERE...Snowy Range. * WHEN...From 9 PM this evening to noon MDT Wednesday. * IMPACTS...Outdoor recreation could become dangerous to those caught unprepared for hazardous winter conditions. Hunters, hikers, and snowmobilers may become disoriented and lost due to low visibility in falling and blowing snow.

* WHAT...Heavy snow possible. Total snow accumulations between 4 and 10 inches possible. * WHERE...Central Laramie County. * WHEN...From midnight tonight to 9 AM MDT Wednesday. * IMPACTS...The weight of the heavy, wet snow on tree limbs may down power lines and could cause sporadic power outages. Travel could be very difficult. The hazardous conditions could impact the morning and evening commutes on Tuesday, and the morning commute on Wednesday. If you must travel, keep an extra flashlight, food, and water in

* 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.