Expected

Areas of fog will reduce the visibility to one quarter mile in parts of northwest and north central North Dakota this morning. Motorists should be prepared for rapidly changing visibilities, and should use extra caution traveling. Use low beam headlights and be extra cautious at intersections and railroad crossings. The fog is expected to dissipate by mid to late morning.

* WHAT...For the Frost Advisory, temperatures 32 to 36 will result in frost formation. Areas along the interstates from Burley to Pocatello to Idaho Falls may remain warmer than 36. For the Lake Wind Advisory for American Falls Reservoir, north winds 20 to 30 mph with gusts up to 40 mph expected. * WHERE...Lower Snake River Plain. * WHEN...For the Frost Advisory, until 9 AM MDT this morning. For the Lake Wind Advisory, until 9 PM MDT this evening.

* WHAT...Sub-freezing temperatures 28 to 32 expected. * WHERE...Shoshone/Lava Beds and Arco/Mud Lake Desert. * WHEN...Until 9 AM MDT 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...Sub-freezing temperatures as low as the mid to upper 20s expected. * WHERE...Western Uinta Basin. * WHEN...From midnight tonight to 9 AM MDT 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. Drain in-ground sprinkler systems and cover above ground pipes.

* WHAT...Sub-freezing temperatures as low as the mid to upper 20s expected. * WHERE...Eastern Juab/Millard Counties, Sanpete Valley, Sevier Valley, Western Millard and Juab Counties, Wasatch Back, and Southwest Utah. * WHEN...For the first Freeze Warning, until 9 AM MDT today. For the second Freeze Warning, from midnight tonight to 9 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

* WHAT...Sub-freezing temperatures as low as the mid to upper 20s expected. * WHERE...Eastern Juab/Millard Counties, Sanpete Valley, Sevier Valley, Western Millard and Juab Counties, Wasatch Back, and Southwest Utah. * WHEN...For the first Freeze Warning, until 9 AM MDT today. For the second Freeze Warning, from midnight tonight to 9 AM MDT Tuesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

* WHAT...Sub-freezing temperatures as low as the mid to upper 20s expected. * WHERE...Cache Valley/Utah Portion. * WHEN...From midnight tonight to 9 AM MDT 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. Drain in-ground sprinkler systems and cover above ground pipes.

At 538 AM CDT, Doppler radar was tracking a strong thunderstorm 8 miles northwest of Watertown, moving northeast at 55 mph. HAZARD...Wind gusts up to 40 mph and half inch 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... Watertown, Beaver Dam, Waupun, Mayville, Columbus, Horicon, Juneau, Theresa, Hustisford, Iron Ridge, Burnett, Rubicon, Lebanon, Fox Lake,

Areas of fog with patchy dense fog can be expected early this morning. Visibilities will drop to less than a mile in many areas, and locally to 1/4 mile or less. Motorists should be alert for poor and rapidly changing visibilities during the morning commute. The foggy conditions are expected to improve in most areas by mid-morning.

At 542 AM CDT, Doppler radar was tracking a strong thunderstorm near Clinton, or 8 miles east of Beloit, moving northeast at 50 mph. HAZARD...Wind gusts up to 40 mph and penny 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... Beloit, Whitewater, Elkhorn, Delavan, East Troy, Clinton, Sharon, Darien, Richmond, La Grange, Tiffany, Abells Corners, Allens Grove,