HAZARDOUS WEATHER OUTLOOK
Issue Date: 535 AM CST WED DEC 23 2009
Expiration: 530 AM CST THU DEC 24 2009

Expires:200912241130;;
FLUS43 KDVN 231132 CCA
HWODVN
HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
525 AM CST WED DEC 23 2009
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-241130-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
525 AM CST WED DEC 23 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST
CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST
MISSOURI.
.DAY ONE...TODAY AND TONIGHT
WINTER WEATHER ADVISORIES HAVE BEEN POSTED FOR MUCH OF THE AREA
ALONG AND NORTH OF INTERSTATE 80. A FLOOD WATCH IS ALSO IN EFFECT
FOR AREAS ALONG AND SOUTH OF INTERSTATE 80 THIS AFTERNOON AND
TONIGHT.
AREAS OF FREEZING DRIZZLE WILL AFFECT MUCH OF THE OUTLOOK AREA
ALONG AND NORTH OF INTERSTATE 80 THIS MORNING... RESULTING IN
A THIN COATING OF ICE ON ELEVATED AND UNTREATED SURFACES... AND
MAKING TRAVEL SLICK AND HAZARDOUS ESPECIALLY ON BRIDGES...OVERPASSES
AND SECONDARY ROADS.
A LARGE STORM SYSTEM WILL BRING A VARIETY OF WEATHER TO THE
OUTLOOK AREA TODAY AND TONIGHT.
SOUTH OF INTERSTATE 80... THE PRECIPITATION WILL FALL AS RAIN WITH
THE POTENTIAL FOR A FEW RUMBLES OF THUNDER ESPECIALLY SOUTH OF
HIGHWAY 34.
FROM THE INTERSTATE 80 CORRIDOR TO NEAR HIGHWAY 30... RAIN AND
FREEZING RAIN IS EXPECTED BY AFTERNOON POSSIBLY MIXED WITH SLEET
AND SNOW AT THE ONSET... WITH THE PRECIPITATION GRADUALLY CHANGING
OVER TO ALL RAIN BY THIS EVENING AS TEMPERATURES CLIMB ABOVE
FREEZING. ICE ACCUMULATION OF LESS THAN ONE QUARTER INCH WILL BE
POSSIBLE ON ELEVATED OR UNTREATED SURFACES.
HIGHWAY 30 THROUGH HIGHWAY 20... A MIX OF FREEZING RAIN...SLEET
AND SNOW IS EXPECTED THIS AFTERNOON GRADUALLY CHANGING OVER TO
ALL RAIN TONIGHT AS TEMPERATURES CLIMB ABOVE FREEZING. ICE
ACCUMULATIONS OF UP TO ONE QUARTER INCH ARE EXPECTED. HOWEVER...
DEPENDING ON THE TIMING OF THE CHANGE OVER AND TEMPERATURES AT
THE SURFACE... THERE IS THE POTENTIAL FOR SIGNIFICANT ICE
ACCUMULATIONS IN EXCESS OF ONE QUARTER INCH.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
RAIN...LOCALLY HEAVY...WILL BE WIDESPREAD ACROSS THE OUTLOOK AREA
THURSDAY INTO THURSDAY NIGHT. RAINFALL AMOUNTS OF 1 TO 2 INCHES
SHOULD BE COMMON. THIS MAY LEAD TO RAPID RUNOFF INTO AREA STREAMS
AND RIVERS DUE TO SNOW PACK OR FROZEN GROUND. A FLOOD WATCH IS IN
EFFECT THURSDAY AND THURSDAY NIGHT.
THE RAIN WILL THEN TURN TO SNOW LATE THURSDAY NIGHT AND FRIDAY...
POSSIBLY BECOMING MODERATE TO HEAVY ACROSS PORTIONS OF THE OUTLOOK
AREA. THERE ARE TOO MANY UNCERTAINTIES WITH THE TRACK OF THE STORM
SYSTEM TO DETERMINE SNOW AMOUNTS AT THIS TIME. MUCH COLDER AIR AND
OCCASIONAL SNOW SHOWERS CAN BE EXPECTED FOR THIS CHRISTMAS HOLIDAY
WEEKEND.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. HOWEVER
REPORTS OF SNOW AND ICE ACCUMULATIONS WILL BE APPRECIATED.
$$

WINTER WEATHER ADVISORY
Issue Date: 407 PM CST TUE DEC 22 2009
Expiration: 600 PM CST WED DEC 23 2009

...WINTER STORM TO AFFECT THE AREA...
.A SIGNIFICANT STORM SYSTEM WILL IMPACT THE AREA FROM WEDNESDAY
THROUGH FRIDAY. UPPER AIR DATA THIS MORNING WAS MUCH WARMER ACROSS
THE SOUTHERN PLAINS THAN FORECAST BY ANY COMPUTER MODEL. THIS
WARMER AIR WILL MOVE INTO THE AREA AND REDUCE THE OVERALL SNOW
AND ICE AMOUNTS.
MIXED PRECIPITATION IS EXPECTED FROM THE INTERSTATE 80 CORRIDOR ON
NORTH WEDNESDAY...AND WILL CONTINUE NORTH OF HIGHWAY 30 WEDNESDAY
NIGHT. TEMPERATURES ARE EXPECTED TO WARM ENOUGH ON THURSDAY TO
ALLOW ALL RAIN TO FALL. AS THE STORM SYSTEM PASSES THURSDAY NIGHT
INTO FRIDAY...COLDER AIR WILL BE PULLED BACK INTO THE AREA. THIS
COLDER AIR IS EXPECTED TO CHANGE THE RAIN BACK TO SNOW RESULTING
IN MODERATE SNOW ACCUMULATIONS.
IAZ063>068-ILZ009-015-230615-
/O.UPG.KDVN.WS.A.0006.091223T1200Z-091225T0000Z/
/O.NEW.KDVN.WW.Y.0013.091223T1200Z-091224T0000Z/
IOWA-JOHNSON-CEDAR-CLINTON-MUSCATINE-SCOTT-WHITESIDE-ROCK ISLAND-
INCLUDING THE CITIES OF...MARENGO...IOWA CITY...TIPTON...
CLINTON...MUSCATINE...BETTENDORF...DAVENPORT...STERLING...
ROCK FALLS...MOLINE...ROCK ISLAND
407 PM CST TUE DEC 22 2009
...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST
WEDNESDAY...
THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
WEATHER ADVISORY FOR MIXED PRECIPITATION...WHICH IS IN EFFECT
FROM 6 AM TO 6 PM CST WEDNESDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.
* A MIXTURE OF FREEZING RAIN...SLEET...AND SOME SNOW WEDNESDAY
CHANGING TO ALL RAIN LATE IN THE AFTERNOON.
* SNOW AND SLEET AMOUNTS OF AN INCH OR LESS ARE EXPECTED ON
WEDNESDAY.
* ICE ACCUMULATIONS LESS THAN ONE QUARTER INCH IS POSSIBLE
WEDNESDAY.
* MINOR TO MODERATE TRAVEL IMPACTS ARE EXPECTED FROM THIS STORM
WEDNESDAY THROUGH FRIDAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF
SNOW...SLEET...AND/OR FREEZING RAIN WILL CAUSE TRAVEL
DIFFICULTIES.  BE PREPARED FOR SLIPPERY ROADS AND LIMITED
VISIBILITIES...AND BE CAREFUL WHILE DRIVING.
$$

FLOOD WATCH
Issue Date: 347 PM CST TUE DEC 22 2009
Expiration: 600 AM CST FRI DEC 25 2009

...EXTENDED PERIOD OF RAIN AND SNOWMELT MAY LEAD TO FLOODING...
.A LARGE...SLOW MOVING STORM SYSTEM DEVELOPING IN THE CENTRAL
PLAINS WILL SPREAD WIDESPREAD RAIN ACROSS NORTHEAST MISSOURI...
EASTERN IOWA...AND NORTHWEST ILLINOIS WEDNESDAY THROUGH THURSDAY
NIGHT. THIS MAY RESULT IN 2 DAY RAINFALL AMOUNTS RANGING FROM 1.5
TO 2.5 INCHES ACROSS THE AREA. THIS AMOUNT OF RAIN MAY QUICKLY
RUNOFF INTO AREA RIVERS AND STREAMS WHERE THE GROUND IS FROZEN
AND BARE. WHERE THERE IS SNOW COVER IN PLACE...SNOW AND SLUSH MAY
INTERFERE WITH NORMAL DRAINAGE AND LEAD TO FLOODING. IN ADDITION...
THERE WILL BE THE POTENTIAL FOR ICE JAMS ON AREA RIVERS.
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-230600-
/O.NEW.KDVN.FA.A.0002.091223T1800Z-091225T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MAQUOKETA...MARENGO...
IOWA CITY...TIPTON...CLINTON...MUSCATINE...BETTENDORF...
DAVENPORT...SIGOURNEY...WASHINGTON...WAPELLO...FAIRFIELD...
MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....FORT MADISON...
GALENA...FREEPORT...MOUNT CARROLL...STERLING...ROCK FALLS...
MOLINE...ROCK ISLAND...KEWANEE...PRINCETON...HENNEPIN...ALEDO...
OQUAWKA...MONMOUTH...CARTHAGE...MACOMB...MEMPHIS...KAHOKA
347 PM CST TUE DEC 22 2009
...FLOOD WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE
THURSDAY NIGHT...
THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A
* FLOOD WATCH FOR PORTIONS OF ILLINOIS...IOWA AND NORTHEAST
MISSOURI...INCLUDING THE FOLLOWING AREAS...IN ILLINOIS...
BUREAU...CARROLL...HANCOCK...HENDERSON...HENRY IL...JO
DAVIESS...MCDONOUGH...MERCER...PUTNAM...ROCK ISLAND...
STEPHENSON...WARREN AND WHITESIDE. IN IOWA...BENTON...
BUCHANAN...CEDAR...CLINTON...DELAWARE...DES MOINES...DUBUQUE...
HENRY IA...IOWA...JACKSON...JEFFERSON...JOHNSON...JONES...
KEOKUK...LEE...LINN...LOUISA...MUSCATINE...SCOTT...VAN BUREN
AND WASHINGTON. IN NORTHEAST MISSOURI...CLARK AND SCOTLAND.
* FROM WEDNESDAY AFTERNOON THROUGH LATE THURSDAY NIGHT
* RAINFALL AMOUNTS FROM 1.5 TO 2.5 INCHES WEDNESDAY THROUGH
THURSDAY NIGHT MAY LEAD TO FLOODING ALONG AREA RIVERS. FLOODING
OF URBAN AND SMALL STREAM DRAINAGES WILL ALSO BE POSSIBLE DUE TO
BLOCKAGES FROM SNOW AND ICE.
* RISING WATER LEVELS MAY ALSO LEAD TO POTENTIAL ICE JAMS ON AREA
RIVERS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS.  MONITOR LATER FORECASTS AND TAKE ACTION IF A
FLOOD WARNING IS ISSUED OR FLOODING DEVELOPS.
$$
SHEETS

WINTER STORM WATCH
Issue Date: 330 AM CST TUE DEC 22 2009
Expiration: 600 PM CST THU DEC 24 2009

...MAJOR WINTER STORM TO AFFECT THE AREA...
.A MAJOR WINTER STORM WILL IMPACT THE AREA FROM WEDNESDAY THROUGH
FRIDAY. THIS STORM WILL BRING HEAVY SNOW...ICE AND SLEET TO
LOCATIONS MAINLY ALONG AND NORTH OF INTERSTATE 80. ON THURSDAY
THE MIXED PRECIPITATION MAY CHANGE OVER TO ALL RAIN BEFORE
CHANGING BACK TO SNOW BY FRIDAY.
IAZ063>068-ILZ002-007-009-015-221730-
/O.EXB.KDVN.WS.A.0006.091223T1200Z-091225T0000Z/
IOWA-JOHNSON-CEDAR-CLINTON-MUSCATINE-SCOTT-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-
INCLUDING THE CITIES OF...MARENGO...IOWA CITY...TIPTON...
CLINTON...MUSCATINE...BETTENDORF...DAVENPORT...FREEPORT...
MOUNT CARROLL...STERLING...ROCK FALLS...MOLINE...ROCK ISLAND
330 AM CST TUE DEC 22 2009
...WINTER STORM WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
THURSDAY AFTERNOON...
THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
STORM WATCH...WHICH IS IN EFFECT FROM WEDNESDAY MORNING THROUGH
THURSDAY AFTERNOON.
* FREEZING RAIN...SLEET AND SNOW WILL BEGIN ON WEDNESDAY AND
CONTINUE INTO THURSDAY. THE MIXED PRECIPITATION WILL EVENTUALLY
CHANGE TO ALL RAIN ON THURSDAY.
* SNOW AMOUNTS OF 1 TO 4 INCHES IS POSSIBLE ON WEDNESDAY NORTH OF
HIGHWAY 30 BEFORE CHANGING TO MIXED PRECIPITATION.
* ICE ACCUMULATIONS OF AT LEAST 1/4 TO 1/2 INCH ARE POSSIBLE
WEDNESDAY INTO THURSDAY...WITH SLEET ACCUMULATIONS UP TO 1/4
INCH. A MAJOR ICE STORM IS POSSIBLE IF TEMPERATURES REMAIN BELOW
FREEZING LONGER THAN EXPECTED.
* EAST WINDS OF 15 TO 25 MPH WITH GUSTS TO 35 MPH MAY CAUSE
WIDESPREAD POWER OUTAGES AND KNOCK TREE BRANCHES DOWN WHERE ICE
ACCUMULATIONS OCCUR.
* VISIBILITIES MAY BE LESS THAN A MILE DURING PERIODS OF HEAVY
PRECIPITATION.
* SIGNIFICANT TO SEVERE TRAVEL IMPACTS ARE EXPECTED FROM THIS
STORM WEDNESDAY THROUGH THURSDAY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...AND/OR ICE ACCUMULATIONS THAT WOULD SERIOUSLY
IMPACT TRAVEL. MONITOR LATER FORECASTS FOR UPDATES.
$$