Expected

* WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Portions of northern and north central Iowa. * WHEN...Until 8 AM CDT this 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...For the High Rip Current Risk, dangerous rip currents. For the High Surf Advisory, large breaking waves of 3 to 9 feet in the surf zone. For the Coastal Flood Statement, isolated minor coastal flooding expected. * WHERE...Kenedy Island, Willacy Island and Cameron Island Counties. * WHEN...For the High Rip Current Risk, through Sunday evening. For the High Surf Advisory, until 1 AM CDT Sunday. For the Coastal Flood Statement, until 2 PM CDT this afternoon.

* WHAT...Sub-freezing temperatures away from the immediate lakeshores of northern lower Michigan. Temperatures in the low 30s are anticipated for many interior areas. Low-lying interior areas may see temperatures in the upper 20s. Above-freezing temperatures possible along lakeshore areas. * WHERE...A portion of Northern Lower Michigan. * WHEN...Until 9 AM EDT this morning. * IMPACTS...Freeze conditions could damage or kill crops and other sensitive vegetation. Take steps now to protect tender plants from the cold.

* WHAT...Sub-freezing temperatures as low as 30 degrees. * WHERE...Portions of northern Indiana, southwest Michigan, and northwest Ohio. * WHEN...Until 9 AM EDT /8 AM CDT/ this morning. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation. Take steps now to protect tender plants from the cold.

* WHAT...Dangerous rip currents and strong longshore currents in the surf zone. * WHERE...The beaches north of Cape Hatteras. * WHEN...From 8 AM EDT this morning through this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Strong longshore currents will create dangerous swimming conditions. * ADDITIONAL DETAILS...The most likely time for strong rip currents to occur is a couple hours either side of low tide, which will occur around 2:00 PM Saturday.

* WHAT...Sub-freezing temperatures as cold as 30 degrees expected. * WHERE...Crawford and Southern Erie Counties. * WHEN...Until 9 AM EDT this 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...Increased threat of sneaker waves expected. * WHERE...Coastal Del Norte, Northern Coastal Humboldt, Southwestern Humboldt and Coastal Mendocino Counties. * WHEN...From Saturday evening through Sunday evening. . * IMPACTS...Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These sneaker waves can also move large objects such as logs, crushing anyone caught underneath. Don't be fooled by an ocean that looks calm. There can be

* WHAT...Temperatures around freezing. * WHERE...Chautauqua County. * WHEN...Until 9 AM EDT this 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 freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover

* WHAT...Sub-freezing temperatures as low as 25. * WHERE...Portions of central, south central, southwest, and west central Michigan. * WHEN...Until 9 AM EDT this 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...Dangerous rip currents expected. * WHERE...Pinellas, Coastal Hillsborough, Coastal Manatee, Coastal Sarasota, Coastal Charlotte and Coastal Lee Counties. * WHEN...From 10 AM EDT this morning through late tonight. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the