A Winter Storm Warning will go into effect across the entire KWWL viewing area Monday morning. Snow, sleet, freezing rain and wind will cause major travel issues.
Overnight we will have increasing clouds across the areas, and the wind will pick up out of the north from 10 to 20 mph. Between 1 AM and 3 AM, a wintry mix of snow, sleet and/or freezing rain will being to track into the southern areas, such as Sigourney, Washington, Williamsburg and Iowa City. Between 7 and 9 AM, the wintry precipitation will be making its way north areas along Highway 20. This means the Monday morning commute will likely be tricky. By mid-morning, all of eastern Iowa will be in the midst of the winter storm.
The best chances to see ice accumulation from freezing rain will be from Highway 30 and points to the south, where a tenth to quarter of an inch of ice accumulation is possible. Areas north of Highway 30 could see up to a tenth of an inch of ice. Remember, it does not take much ice to create hazardous conditions on the roadways.
Farther to the north, it will be more of a sleet and snow mix, before we all transition to snow by the late afternoon and early evening hours. Snow totals will have a widespread range across the area. From at least an inch in our far southeast, to at least 8 inches in the far northwest. There could be isolated higher amounts in our northwestern areas. *Note*: These will likely be adjusted as the storm system evolves.
Again, this is a very tricky forecast and snow/ice amounts will be dependent on surface temperatures and when the switch from freezing rain to snow occurs. Confidence is high that travel will become difficult quickly across the state Monday.
Stay tuned to KWWL on air, online and on social media throughout the weekend as we will keep you updated on the potential for a winter storm on Monday, December 28.
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This post was written by Kyle Kiel on December 27, 2015