Moderate

* WHAT...Sub-freezing temperatures as low as 23 expected. * WHERE...Hamilton, Morton, and Stanton Counties. * WHEN...From midnight MDT /1 AM CDT/ Wednesday Night to 8 AM MDT /9 AM CDT/ Thursday. * 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...Heat index values of 111 F to 116 F. * WHERE...Inland Kenedy, Southern Hidalgo, Inland Willacy and Inland Cameron Counties. * WHEN...From 1 PM to 7 PM CDT Wednesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses to occur. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances.

* WHAT...Sub-freezing temperatures of 25 to 32 degrees expected. * WHERE...Arco/Mud Lake Desert and Upper Snake River Plain. * WHEN...From 3 AM to 9 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.

* WHAT...The Lake Wind Advisory will be allowed to expire at 9 PM MDT this evening. For the Freeze Warning, sub-freezing temperatures of 25 to 32 degrees expected. * WHERE...Lower Snake River Plain. * WHEN...From 3 AM to 9 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.

Winds will continue to decrease through the night, therefore the Wind Advisory will be allowed to expire.

* WHAT...Sub-freezing temperatures as low as 29 expected. * WHERE...Clare, Osceola, and Lake Counties. * WHEN...Until 8 AM EDT 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.

* WHAT...Sub-freezing temperatures in the mid 20s are expected across a large areas of the southeast plains of Colorado. * WHERE...Portions of central, east central, and southeast Colorado. * WHEN...From midnight Wednesday Night to 8 AM MDT Thursday. * IMPACTS...Freeze conditions will likely kill crops, other sensitive vegetation, and damage unprotected outdoor plumbing. Take steps now to protect tender plants from the cold.

* WHAT...Sub-freezing temperatures as low as 27 expected. * WHERE...Portions of southwest Minnesota and central, east central, south central, and southeast South Dakota. * WHEN...From 1 AM to 7 AM CDT 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.

At 615 PM PDT, Doppler radar was tracking a strong thunderstorm near Dunphy, moving southwest at 15 mph. HAZARD...Wind gusts up to 40 mph and pea size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Beowawe, Dunphy, and Mule Canyon Reclamation Project. If outdoors, consider seeking shelter inside a building.

* WHAT...Snow expected. Total snow accumulations between 4 and 10 inches. * WHERE...Northern Sangre de Cristo Mountains Between 8500 and 11000 Feet, Southern Sangre de Cristo Mountains Between 7500 and 11000 Feet, and Wet Mountains between 6300 and 10000 Feet. * WHEN...Until midnight MDT Wednesday Night. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be difficult. The hazardous conditions could impact the Wednesday morning and evening commutes.