We continue to have our eye on a clipper system that will be moving into the state later tonight. It does appear that this clipper system has slowed down, which will have only minor effects. Temperatures today have warmed nicely into the lower 40’s and upper 30’s across southwest Iowa and this will have an effect on precipitation type later tonight.
It appears that a rain/snow mix will be entering into western Iowa after 9pm this evening due to the warmer temperatures across southwest Iowa. It will take some time before the temperatures cool enough before this rain/mix can transition over to all snow, and this does not look like it will happen until after midnight. This line will then continue off to the east and will then be into central Iowa after 2am.
Eastern Iowa will not see the snow until after 5am Wednesday. However, lighter accumulations will be expected across eastern Iowa. Snow will be ending across the western and central potions of the state during the early afternoon, with snowfall ending across eastern Iowa around 5pm.
After all said and done, the heaviest of the snow will be across central and north central Iowa. This is where 3″ to 4″ of snow will be possible. Places across western and eastern Iowa will see anywhere from 0.25″ to 2″.
Because of the heavier snowfall totals across central and northern Iowa, a winter weather advisory has been issued from midnight tonight to 6pm Wednesday. Southeast winds of 10 to 15mph will give way to north winds following the storm with winds increasing to 10 to 20mph over the area by Wednesday evening. Visibility may be reduced to one half mile at times during the heaviest snowfall.
Travel will be impacted tomorrow across much of the state by late morning. Early morning, travel will be rough across western Iowa. If you will be traveling tomorrow, check 511ia.org for all the very latest road conditions. We will continue to be bring you all the very latest update on our Facebook and Twitter pages as well as right here at www.iowachase.com.