914 AWUS83 KDMX 280300 RWSDMX IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086- 092>097-260400- WEATHER SUMMARY FOR IOWA NATIONAL WEATHER SERVICE DES MOINES IA 900 PM CST TUE DEC 25 2007 CLOUDY CONDITIONS PERSISTED THROUGH THE EVENING ACROSS IOWA...WITH LITTLE CHANGE IN THE WEATHER CONDITIONS. EASTERLY WINDS TAPERED OFF SLIGHTLY INTO THE 3 TO 5 MPH RANGE...AND WIND BECAME CALM THROUGHOUT THE UPPER DES MOINES RIVER VALLEY. TEMPERATURES WERE ALSO QUITE STEADY WITH READINGS IN THE 20S AT 9 PM. A LOW PRESSURE SYSTEM WILL MOVE FROM THE SOUTHERN PLAINS INTO THE MID MISSISSIPPI RIVER VALLEY OVER THE NEXT 12 TO 26 HOURS. AS A RESULT... SNOW WILL SPREAD NORTHWARD ACROSS MISSOURI INTO SOUTHWEST IOWA BY EARLY THURSDAY...AND INTO CENTRAL AND EASTERN IOWA THROUGH THE DAY. THE BULK OF THE SNOW WILL FALL FROM NORTHERN MISSOURI...INTO SOUTHEAST AND EAST CENTRAL IOWA INTO NORTHERN ILLINOIS...WHERE GENERALLY 3 TO 6 INCHES...WITH LOCALLY HIGHER WILL BE POSSIBLE BY TOMORROW AFTERNOON. SNOW ADVISORIES HAVE BEEN ISSUED FOR THESE AREAS FOR FRIDAY. SNOW WILL TAPER OFF BY THE THE EVENING HOURS FRIDAY...THEN HIGH PRESSURE IS FORECAST TO BUILD INTO THE REGION FRIDAY NIGHT INTO SATURDAY. ON SUNDAY...ANOTHER SYSTEM LOOKS TO BRING MORE SNOW TO THE REGION. $$ PODRAZIK/RUSSELL