Severe

* WHAT...Sub-freezing temperatures as low as 20 possible. * WHERE...Portions of east central and northeast Colorado, northwest and west central Kansas, and southwest Nebraska. * 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. To prevent water pipes from freezing; insulate or drain or allow them to drip slowly.

* WHAT...Heavy snow possible. Total snow accumulations between 3 and 8 inches possible, heaviest on colder surfaces and west of I-25. * WHERE...Fort Collins, Boulder and the western suburbs of Denver, Denver, and Castle Rock. * WHEN...From Tuesday evening through Wednesday afternoon. Heaviest Tuesday night into Wednesday morning. * IMPACTS...Heavy wet snow will accumulate on tree branches and powerlines, possibly causing them to break and lead to power outages. Despite lesser accumulations on roadways, slick and

* WHAT...Heavy snow expected. Total snow accumulations between 6 and 18 inches, with the heaviest snowfall favored along and north of I-70. * WHERE...The Mountains of Summit County, the Mosquito Range, the Indian Peaks Wilderness, and the Southern Front Range foothills. * WHEN...From noon Tuesday to 3 PM MDT Wednesday. Heaviest Tuesday night into Wednesday morning. * IMPACTS...Heavy snow will accumulate on tree branches and powerlines, possibly causing them to break and lead to power

* WHAT...Heavy snow expected. Total snow accumulations between 10 and 24 inches, heaviest above 8,000 feet. Isolated totals up to 30 inches possible across the higher mountains in Boulder and Larimer counties. * WHERE...Rocky Mountain National Park, the Medicine Bow Range, and the northern Front Range foothills, including Red Feather Lakes, Estes Park, and Nederland. * WHEN...From midnight tonight to 3 PM MDT Wednesday. * IMPACTS...Heavy snow will accumulate on tree branches and

The National Weather Service in Grand Rapids has issued a Red Flag Warning, which is in effect until 7 PM EDT this evening. * Winds...Southwest 15 to 20 mph with gusts up to 35 mph. * Relative Humidity...As low as 20 percent. * Temperatures...In the mid 70s. * Impacts...Burn restrictions are likely in effect. For more information on burn restrictions...visit the Michigan DNR website at www.michigan.gov/burnpermit or call 866-922-2876. A Red Flag Warning means that critical fire weather conditions

* WHAT...West winds 40 to 50 mph with gusts up to 70 mph expected. * WHERE...Guadalupe Mountains of west Texas and Southeast New Mexico. * WHEN...From 9 AM MDT /10 AM CDT/ to 9 PM MDT /10 PM CDT/ Tuesday. * IMPACTS...Travel will be difficult, especially for high profile vehicles like campers, vans, and tractor trailers. Severe turbulence near the mountains will be hazardous for low flying light aircraft. Aviation interests may experience localized but extreme turbulence, or strong downward airflows if flying in the

* WHAT...Heavy snow expected. Total snow accumulations between 5 and 10 inches. * WHERE...North Snowy Range Foothills including Arlington and Elk Mountain along Interstate 80. * WHEN...From 9 PM this evening to noon MDT Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick, slushy, and hazardous. Monitor the latest forecasts for updates on this situation.

* WHAT...Heavy snow expected. Total snow accumulations between 7 and 17 inches. * WHERE...South Laramie Range and Foothills including the Interstate 80 Summit between Cheyenne and Laramie. * WHEN...From 9 PM this evening to noon MDT Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. The weight of the heavy, wet snow on tree limbs and powerlines and could cause sporadic power outages. Monitor the latest forecasts for updates on this situation.

* 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