COUNTIES IN WEST CENTRAL IOWA: CRAWFORD-CARROLL-AUDUBON-GUTHRIE-DALLAS-CASS-ADAIR-MADISON-ADAMS-UNION-TAYLOR-RINGGOLD…343 AM CST TUE DEC 18 2012

…WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH THURSDAY AFTERNOON…

PRECIPITATION WILL OVERSPREAD CENTRAL IOWA WEDNESDAY AFTERNOON. SNOW IS EXPECTED ALONG AND NORTH OF AN ATLANTIC THROUGH BOONE TO WATERLOO LINE. RAIN IS EXPECTED IN SOUTHERN IOWA SOUTH OF A BEDFORD TO OSKALOOSA LINE. IN BETWEEN…A RAIN AND SNOW MIX IS EXPECTED. THIS PRECIPITATION WILL CHANGE TO ALL SNOW LATE WEDNESDAY EVENING BEFORE ENDING THURSDAY MORNING.

5 TO 8 INCHES OF SNOW IS EXPECTED IN THE WATCH AREA. LOCAL AMOUNTS OF UP TO 10 INCHES WILL BE VERY POSSIBLE WITH DRIFTS EVEN HIGHER. WINDS WILL BECOME VERY STRONG WEDNESDAY NIGHT FROM THE NORTH NORTHWEST. SUSTAINED WINDS OF 25 TO 33 MPH ARE EXPECTED WITH GUSTS OVER 45 MPH POSSIBLE. THE STRONGEST WINDS ARE EXPECTED A FEW HOURS PRIOR TO DAYBREAK THROUGH NOON THURSDAY. BLIZZARD OR NEAR BLIZZARD CONDITIONS MAY OCCUR WITH VISIBILITIES REDUCED BELOW ONE QUARTER OF A MILE FROM TIME TO TIME.

VERY DANGEROUS CONDITIONS ARE EXPECTED TO DEVELOP ON WEDNESDAY NIGHT INTO THURSDAY MORNING. BE PREPARED FOR VERY DIFFICULT TRAVEL AND BLIZZARD OR NEAR BLIZZARD CONDITIONS.

THIS WATCH MAY BE UPGRADED TO A BLIZZARD WATCH TODAY.

COUNTIES IN WESTERN IOWA: MONONA-HARRISON-SHELBY-POTTAWATTAMIE-MILLS-MONTGOMERY-FREMONT-

PAGE; 316 AM CST TUE DEC 18 2012 NATIONAL WEATHER SERVICE/VALLEY, NE

…A WINTER STORM WATCH REMAINS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT…

SNOW WILL BEGIN BY MIDDAY ON WEDNESDAY IN EASTERN NEBRASKA…SPREADING INTO WESTERN IOWA BY MID AFTERNOON. SNOWFALL OF UP TO SEVEN INCHES IS POSSIBLE IN THE HEAVIEST BAND…ALTHOUGH THE LOCATION AND POTENTIAL HIGHEST AMOUNTS MAY CHANGE AS THE FORECAST OF THE STORM TRACK FLUCTUATES.

GUSTY NORTH WINDS WILL CREATE BLOWING AND DRIFTING SNOW ON WEDNESDAY NIGHT INTO THURSDAY MORNING…WITH WHITEOUT CONDITIONS POSSIBLE.

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT SNOW…SLEET…OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL. CONTINUE TO MONITOR THE LATEST FORECASTS.