COUNTIES: SAC-CRAWFORD-CARROLL…

WINTER STORM WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH LATE FRIDAY NIGHT…

* TIMING…SNOW OR A RAIN/SNOW MIX IS EXPECTED TO ADVANCE WEST TO EAST ACROSS IOWA STARTING MIDDAY FRIDAY…EVENTUALLY CHANGING TO ALL SNOW AREA WIDE BY FRIDAY NIGHT BEFORE ENDING EARLY SATURDAY MORNING.

* STORM TOTAL SNOW ACCUMULATIONS…SNOW ACCUMULATIONS IN THE WATCH AREA ARE EXPECTED TO VARY FROM FIVE TO SEVEN INCHES ON VEGETATION…WITH LESSER AMOUNTS DUE TO MELTING ON SIDEWALKS AND PAVEMENT. CONFIDENCE IN SNOW AMOUNTS IS NOT HIGH AT THIS POINT HOWEVER DUE TO UNCERTAINTIES WITH REGARD TO STORM TRACK AND THE DEGREE OF MELTING.

* WINDS/VISIBILITIES…WINDS OF 10 TO 20 MPH DURING THE SNOW MAY PRODUCE MINOR BLOWING AND DRIFTING…AND ALSO HELP CONTRIBUTE TO VISIBILITIES UNDER A MILE DURING PERIODS OF HEAVIER SNOW.

* IMPACTS…ROADS WILL BECOME WET INITIALLY AND THEN SLUSHY BEFORE SNOW BEGINS ACCUMULATING. THE COMBINATION OF SLUSHY AND SNOW COVERED ROADS MAY LEAD TO HAZARDOUS TRAVEL CONDITIONS… INCLUDING DURING THE FRIDAY EVENING COMMUTE.

PRECAUTIONARY/PREPAREDNESS ACTIONS… A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS AS THE EVENT NEARS AND DETAILS ARE BETTER KNOWN.