Severe

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of southwest and western Texas, including the following areas, in southwest Texas, Central Brewster, Chinati Mountains, Chisos Basin, Davis Mountains, Davis Mountains Foothills, Lower Brewster County, Marfa Plateau, Pecos, Presidio Valley and Terrell. In western Texas, Andrews, Borden, Crane, Dawson, Ector, Gaines, Glasscock, Howard, Loving, Martin, Midland, Mitchell, Reagan, Reeves County Plains, Scurry, Upton, Ward and

* WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Campbell, Corson, Dewey, Edmunds, McPherson, Potter, Walworth, and Brown Counties. * WHEN...From 3 AM CDT /2 AM MDT/ to 9 AM CDT /8 AM MDT/ Wednesday. * 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 drip slowly.

* WHAT...Northeast winds 25 to 45 mph with gusts of 50 to 70 mph possible. * WHERE...Eastern San Gabriel Mountains, Interstate 5 Corridor, Santa Susana Mountains, Western San Gabriel Mountains and Highway 14 Corridor, and Western Santa Monica Mountains Recreational Area. * WHEN...From Thursday morning through Friday evening. * IMPACTS...Damaging winds could blow down trees and power lines. Widespread power outages are possible. Travel could be difficult, especially for high profile vehicles. Secure outdoor objects.

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of the Rolling Plains and the Panhandle of Texas, including the following counties, Childress, Cottle, Motley, and Hall. * WHEN...From 7 PM CDT this evening through late Wednesday night. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. * ADDITIONAL DETAILS...

* WHAT...Thursday morning low temperatures in the mid 20s to lower 30s. * WHERE...The San Luis Valley. * WHEN...From midnight Wednesday Night to 8 AM MDT Thursday. * IMPACTS...Freezing temperatures could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...A killing freeze will be possible which could bring an end to the growing season across the San Luis Valley. Take steps now to protect tender plants from the cold.

* WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Portions of northeast and southeast North Dakota. * WHEN...From 1 AM to 9 AM CDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Highest probability for freezing temperatures will be west of the Red River Valley. Take steps now to protect tender plants from the cold.

A stronger atmospheric river is expected to move over the panhandle beginning early Thursday morning and continuing through at least Friday morning. Multiple waves moving up will bring persistent moderate to heavy rain for much of the southern half of the panhandle. Past early Friday morning, additional periods of heavy rain are possible, but confidence is moderate to low at this time. Prolonged periods of moderate to heavy rain will produce significant

A stronger atmospheric river is expected to move over the panhandle beginning early Thursday morning and continuing through at least Friday morning. Multiple waves moving up will bring persistent moderate to heavy rain for much of the southern half of the panhandle. Past early Friday morning, additional periods of heavy rain are possible, but confidence is moderate to low at this time. Prolonged periods of moderate to heavy rain will produce significant

* WHAT...Sub-freezing temperatures as low as 29. * WHERE...Western Magic Valley. * WHEN...Until 10 AM MDT Wednesday. * 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.

...HIGH RISK FOR EXTREME FIRE BEHAVIOR WITH ANY NEW FIRE STARTS THURSDAY THROUGH FRIDAY DUE TO MODERATE TO LOCALLY STRONG SANTA ANA WINDS AND LOW RELATIVE HUMIDITY... .Moderate to locally strong Santa Ana winds will quickly develop on Thursday, peak Thursday afternoon through Friday afternoon, then weaken through the weekend. Meanwhile, dry air will settle over the region and dry out any helpful effects of the recent rains. Fire weather watches are now in effect, which will likely be