DVN AFD mentions possible ice storm on Tuesday.
TUESDAY COULD BE MESSY, WITH A SCENARIO OF FREEZING RAIN AND RAIN
CHANGING OVER TO SLEET AND THEN SNOW IN THE NORTHWEST. WITH THE SFC
LOW, UPPER TROF MIGRATION AND POSSIBLE IN-WRAPPING DRY SLOT, MOST OF
THE PRECIP WILL BE MOVING OUT TO THE NORTH/NORTHEAST BY TUE EVENING.
CURRENT PROJECTIONS ARE THAT MOST OF THE DVN CWA MAY GET A RANGE OF
0.05 TO 0.18 INCH OF ICE, ALONG WITH SOME LIGHT SLEET ACCUMS AND UP
TO A HALF INCH OF SNOW IN THE NORTHWESTERN CWA. BUT WILL HAVE TO
WATCH IF THE WETTER AND MORE DEVELOPED/DEEPER SFC LOW MODELS VERIFY
THAT WOULD PRODUCE HIGH ICE AMOUNTS, AND POSSIBLY QUICKER TOP-DOWN
DYNAMICAL COOLING FOR HIGHER SNOW AMOUNTS TUE AFTERNOON ALONG AND
NORTHWEST OF A IOWA CITY TO WEST OF DUBUQUE LINE. THE WETTER ECMWF
EVEN IF IT HOLDS ON RAIN LONGER, MAY PRODUCE OVER A HALF INCH OF
RAINFALL IN SPOTS ON FROZEN GROUND PRODUCING PONDING AND RUN-OFF.
THE EURO WOULD ALSO PRODUCE A LOCALIZED SWATH OF HIGHER ICE AMOUNTS
OF ICE STORM WARNING CRITERIA GENERALLY WEST OF A DUBUQUE TO ANAMOSA
IA LINE. TUESDAY HIGH TEMPS A CHALLENGE WITH CLOUDS, PRECIP AND
BOUNDARY MOVEMENT ALL AFFECTING VALUES, RANGES COULD BE FROM THE 20S
NORTHWEST TO THE MID 40S SOUTHEAST.