* WHAT…Areas of visibility one quarter mile or less in dense fog.
* WHERE…Portions of northwest and west central Iowa, southwest
Minnesota, and east central and southeast South Dakota.
* WHEN…Until 10 AM CST this morning.
* IMPACTS…Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS…With temperatures below freezing, watch for
frost or refreeze of previously wet roads making for scattered
slippery spots.