A WINTER STORM WILL IMPACT IOWA STARTING FRIDAY NIGHT WITH AWINTRY MIX OF PRECIPITATION SPREADING INTO THE STATE. THE WINTRY MIX WILL EVENTUALLY TRANSITION TO SNOW ON SATURDAY BEFORE A TRANSITION BACK TO A WINTRY MIX. MODERATE TO HEAVY SNOW ACCUMULATIONS ARE POSSIBLE OVER NORTHERN IOWA, ESPECIALLY WEST OF INTERSTATE 35. THE SNOW IS EXPECTED BE VERY HEAVY AND WET INITIALLY AND MAY CAUSE TREE DAMAGE AND SUBSEQUENT POWER OUTAGES. IN ADDITION GUSTY NORTHEAST WINDS WILL CAUSE AREAS OF BLOWING SNOW THAT WILL REDUCE VISIBILITY. THIS WIND ALSO MAY ENHANCE THE POTENTIAL FOR TREE DAMAGE WHERE THE HEAVY AND WET SNOW OCCURS. * WHAT...HEAVY MIXED PRECIPITATION POSSIBLE OVER PORTIONS OF NORTH CENTRAL IOWA ALONG AND SOUTH OF HIGHWAY 20. TOTAL SNOW ACCUMULATIONS OF 1 TO 4 INCHES AND ICE ACCUMULATIONS OF AROUND ONE TENTH OF AN INCH POSSIBLE. WINDS COULD GUST AS HIGH AS 35 MPH. ALONG AND NORTH OF HIGHWAY 20: TOTAL SNOW ACCUMULATIONS WILL RANGE FROM 3 INCHES AROUND HIGHWAY 20 TO 7 TO 9 INCHES POSSIBLE OVER FAR NORTHERN IOWA. ICE ACCUMULATIONS UP TO ONE TENTH OF AN INCH POSSIBLE NORTH OF HIGHWAY 20. WINDS COULD GUST AS HIGH AS 35 MPH.

* WHERE...PORTIONS OF CENTRAL AND NORTHERN IOWA.

* WHEN...FROM FRIDAY EVENING THROUGH SUNDAY MORNING.

* ADDITIONAL DETAILS...TRAVEL COULD BE VERY DIFFICULT STARTING AS EARLY AS LATE FRIDAY NIGHT. THE HEAVY, WET NATURE OF THE SNOW IN ADDITION TO ANY ICE ACCUMULATIONS MAY PRODUCE ISOLATED TREE DAMAGE AND POWER OUTAGES.