Expected

* WHAT...Sub-freezing temperatures as low as 29 expected, especially in outlying areas away from larger bodies of water. * WHERE...Portions of DC, central, northern, and southern Maryland, and central and northern Virginia. * WHEN...From 2 AM to 10 AM EDT Tuesday. * 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, wrap or drain or allow them to

* WHAT...Sub-freezing temperatures as low as 26 to 30 degrees expected. * WHERE...Portions of central, north central, northeast, and northern Maryland, central, northern, northwest, and western Virginia, and panhandle West Virginia. * WHEN...From 2 AM to 10 AM EDT Tuesday. * 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...South winds 20 to 30 mph with gusts up to 50 mph expected. * WHERE...Northern Lander and Northern Eureka, Northern Elko, Ruby Mountains and East Humboldt Range in Elko, South Central Elko, Southeastern Elko, and Southwest Elko Counties. * WHEN...From 10 AM to 11 PM PDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Blowing dust may reduce the visibility to one mile or less in spots.

* WHAT...South winds 35 to 45 mph with gusts up to 60 mph possible. * WHERE...White Pine, Southern Lander and Southern Eureka, Northeastern Nye, and Northwestern Nye Counties. * WHEN...From 10 AM to 11 PM PDT Tuesday. * IMPACTS...Gusty winds will blow around unsecured objects. Winds this strong can make driving difficult, especially for high profile vehicles. Blowing dust may reduce the visibility to one mile or less in spots. Remain in the lower levels of your home during the windstorm, and

* WHAT...Sub-freezing temperatures as low as 26 expected late tonight and early Tuesday. * WHERE...A portion of central Pennsylvania. * WHEN...From midnight tonight to 9 AM EDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants and vegetation from the cold. Unprotected early season plantings may freeze.

* WHAT...Sub-freezing temperatures as low as 22 expected late tonight and early Tuesday. * WHERE...Cameron, Clearfield, Elk, McKean, Northern Centre, Northern Clinton, and Warren Counties. * WHEN...From midnight tonight to 11 AM EDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Take steps now to protect tender plants and vegetation from the cold. Unprotected early season plantings may freeze.

* WHAT...Sub-freezing temperatures as low as 23 expected. * WHERE...Portions of north central, northeast, and northwest Ohio and northwest Pennsylvania. * WHEN...From 8 PM this evening to 10 AM EDT Tuesday. * 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...West winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE...Southwest corner of Imperial County. * WHEN...From 3 PM Tuesday to 8 AM PDT Wednesday. * IMPACTS...Difficult driving conditions, especially for larger vehicles traveling along roads with crosswinds. Light, unsecured objects may become airborne. Winds this strong can make driving difficult, especially for high profile vehicles. In addition, strong winds over desert areas could result in briefly

...Low humidity and gusty northeast winds may produce a High Fire Danger on Tuesday across interior portions of east central Florida... The National Weather Service in Melbourne has issued a Red Flag Warning, which is in effect from 11 AM to 8 PM EDT Tuesday. * AFFECTED AREA... Inland Volusia... Lake... Orange... Seminole... Osceola... Okeechobee. * WIND...Northeast to east-northeast winds 15 to 20 mph with frequent higher gusts. * HUMIDITY...28 to 35 percent. * IMPACTS...any fires that develop will likely spread rapidly.

...The National Weather Service in Quad Cities IA IL has issued a Flood Warning for the following rivers in Illinois... La Moine River at Colmar affecting Hancock and McDonough Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...La Moine River at Colmar. * WHEN...From this afternoon to late tomorrow morning. * IMPACTS...At 20.0 feet, Water affects the lowest portions of Lambert Road and affects Lamar Road approximately 100 feet north of the intersection with County Road 26. * ADDITIONAL DETAILS...