Moderate

* WHAT...Visibility of a quarter-mile or less in dense fog. * WHERE...Coastal Hancock, Coastal Washington, Central Washington, Interior Hancock, and Southern Penobscot Counties. * WHEN...Until 8 AM EDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...High temperatures to around 100 degrees expected alongside overnight low temperatures in the upper-60s to low-70s. * WHERE...Eastern Juab/Millard Counties and Western Millard and Juab Counties. * WHEN...From noon today to 7 AM MDT Friday. * IMPACTS...Hot temperatures may cause heat illness. Warm overnight temperatures will limit the amount of relief from the hot daytime temperatures, bringing a period of prolonged heat exposure, especially for vulnerable populations.

* WHAT...High temperatures to around 100 degrees expected alongside overnight low temperatures in the low- to mid-70s. * WHERE...The Wasatch Front, Great Salt Lake Desert and Mountains, and Tooele and Rush Valleys. * WHEN...From noon today to 7 AM MDT Saturday. * IMPACTS...Hot temperatures may cause heat illness. Warm overnight temperatures will limit the amount of relief from the hot daytime temperatures, bringing a period of prolonged heat exposure, especially for vulnerable populations.

Patchy dense fog has formed across west central Illinois in the last couple of hours. Visibility may fall below one-quarter mile at times through early morning, leading to potentially hazardous travel conditions. Expect rapid changes in visibility over short distances, with visibility possibly even near zero at times. Be sure to slow down if you encounter dense fog. Use low beam headlights if driving, and leave plenty of distance between you and the vehicle ahead.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Garfield, Holt, and Wheeler Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of northeast Kansas and north central, northeast, northwest, and west central Missouri. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

* WHAT...Visibility one quarter to one half mile in dense fog. * WHERE...Cooper, Pettis, Saline, Henry, Johnson MO, and Lafayette Counties. * WHEN...Until 10 AM CDT this morning. * IMPACTS...Low visibility could make driving conditions hazardous. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

At 521 AM CDT, Doppler radar was tracking a strong thunderstorm 12 miles south of New Johnsonville, or 13 miles northeast of Natchez Trace State Park, moving east at 25 mph. HAZARD...Wind gusts up to 40 mph and nickel 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... Huntingdon, Parkers Crossroads, Clarksburg, Westport, Hillard,

Areas of fog, dense in some locations will persist through sunrise. The dense fog will be especially common in river valleys and other low lying areas, and in areas that received rainfall yesterday. Visibilities in the fog will be reduced to one quarter mile or less at times. If traveling early this morning, be prepared for fog that could bring sudden and significant reductions in visibility over short distances. If you encounter dense fog, slow down, give yourself

Areas of dense fog have developed along the Interstate 95 corridor through Duplin County. In this area, visibilities may drop to as low as a quarter to a half a mile at times. If driving, slow down and leave extra distance ahead of you in case a sudden stop is needed.