Værmelding for Mount Vernon Elementary School

Dense Fog Advisory issued December 25 at 3:06AM CST until December 25 at 12:00PM CST by NWS Sioux Falls SD* WHAT...Visibility one quarter mile or less in dense fog.* WHERE...Portions of northwest and west central Iowa, northeastNebraska, and central, south central, and southeast South Dakota.* WHEN...Until noon CST today.* IMPACTS...Low visibility could make driving conditions hazardous.* ADDITIONAL DETAILS...Light frost could lead to slick spots on arearoads.If driving, slow down, use your headlights, and leave plenty ofdistance ahead of you.

National Weather Service