Issued by The National Weather Service
St. Louis, MO
3:42 am CST, Sat., Dec. 13, 2008
... WINTER STORM WATCH IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY AFTERNOON...
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A WINTER STORM WATCH... WHICH IS IN EFFECT FROM SUNDAY EVENING THROUGH MONDAY AFTERNOON.
A SIGNIFICANT WINTER STORM IS EXPECTED TO OCCUR BEGINNING SUNDAY NIGHT ACROSS PORTIONS OF SOUTHEAST AND EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS. AN ARCTIC COLD FRONT WILL MOVE THROUGH THE WATCH AREA ON SUNDAY NIGHT USHERING VERY COLD AIR INTO THE REGION. AS THE COLD AIR FILTERS IN BEHIND THE FRONT... THE ONGOING RAIN WILL SWITCH OVER TO FREEZING RAIN SUNDAY NIGHT. THE FREEZING RAIN WILL THEN SWITCH OVER TO A MIX OF SLEET AND SNOW DURING THE DAY ON MONDAY.
AREAS WITHIN THE WATCH ARE EXPECTED TO RECEIVE ONE QUARTER TO ONE THIRD OF AN INCH OF ICE ACCUMULATION. MUCH OF THIS ICE IS EXPECTED TO ACCUMULATE BEFORE THE MORNING RUSH HOUR ON MONDAY. AN ADDITIONAL ONE QUARTER TO ONE HALF AN INCH OF SLEET ACCUMULATION IS EXPECTED ON TOP OF THE ICE AFTER THE TRANSITION FROM FREEZING RAIN TO SLEET.
SIGNIFICANT DISRUPTIONS TO TRAVEL ARE EXPECTED WITH THIS STORM. THE COMBINATION OF THE ICE AND GUSTY NORTHWEST WINDS COULD ALSO RESULT IN SCATTERED POWER OUTAGES.
THIS STORM IS EXPECTED TO WIND DOWN AND EXIT THE WATCH AREA DURING THE LATE AFTERNOON HOURS ON MONDAY.