Winter Storm Tonight and Wednesday

UPDATED at 4:10 PM

Tonight:  Cloudy and windy with a 100% chance of rain changing to snow. Low 19-28. Wind: N 15-25 mph.

Wednesday: Cloudy, windy and cold with a 100% chance of snow in the morning and tapering off in the afternoon. Snow Totals: 1-6” with isolated higher amounts near 8” (see map below).  Temperatures will be falling into the teens during the afternoon. Wind: NW 20-30 mph gusts to 35 mph. Wind Chill: 0-10.

Wednesday Night: Cloudy and colder. Low: 0-7. Wind: NW 10-20 mph. Wind Chill: -5 to -15.

Thursday: Mostly cloudy, windy (NW 15-25 mph) and cold. High: near 10. Wind Chill: -5 to -10.

Friday: Increasing clouds. High: low teens.

Saturday: Mostly cloudy. High: mid 20s.

Sunday: Partly cloudy. High: low 30s.

Monday: Mostly cloudy with a 20% chance of rain/snow. High: low 30s.

Tuesday: Mostly cloudy. High: upper 20s.

It has been a wild few days in the weather. Earlier today we had record high temperatues in a few locations now tonight a winter storm.

I am tracking the next winter storm to impact eastern Iowa tonight and Wednesday. Rain showers this evening will gradually turn to snow as colder air moves southeast by midnight. There is a brief period where the precipitation my mix with sleet in the transition to snow between 9 pm and midnight. Snow will increase in intensity after midnight. Most of the accumulating snow will be from midnight to noon Wednesday. The snow will taper off Wednesday afternoon. WINTER STORM WARNING is in effect for all of eastern Iowa.

The map below shows where the best chance of 4”+ snow will fall from this evening to Wednesday evening.

The low is forecast to be located near Chicago Wednesday morning. Here is the HPC surface map for Wednesday morning.

The wind will be strong from the north and northwest with gusts to 35 mph. The strong wind will cause blowing and drifting snow through Wednesday evening. As the snow begins it will be a heavy wet snow and gradually transition to a fluffier snow by mid morning Wednesday. Here is the snow forecast from the storm.

Travel will be hazardous late tonight through Wednesday. The recent warm weather and rain will freeze under the snow making it slippery under the snow. Keep that in mind when you go shovel the snow. The temperatures will be dropping into the teens Wednesday afternoon. Combine the colder temperatures with the strong wind and we will be dealing with wind chills at times near zero.

Thursday will be cold with highs in the single digits and a gusty northwest wind pushing wind chills in the teens below zero. The wind lightens up Thursday night and the sky will clear. Combine that with new snow on the ground and the low temperatures Friday morning will be near 10 below zero.

The weather will be quiet through the weekend with temperatures slowly warming. A cold front is forecast to cross the state Monday with a chance of rain/snow.


Posted under Forecast Discussion

This post was written by Schnack on January 29, 2013

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