Alert archive / Illinois / Winter Storm Warnings in 2008

Winter Storm Warning 8, NWS Quad Cities, IA

December 23, 20084 counties in Illinois; Clinton County, Jackson County, Iowa

NWS Quad Cities, IA issued this winter storm warning at Dec 23, 2008, 11:35 AM CST for 4 counties in Illinois; Clinton County, Jackson County, Iowa. It took effect at Dec 23, 2008, 6:00 PM CST. It was in force for 9 hr. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 23, 2008, 11:35 AM CST (17:35 UTC)
In effect from
Dec 23, 2008, 6:00 PM CST
Expired
Dec 24, 2008, 3:20 AM CST
In force
9 hr
Issued by
NWS Quad Cities, IA

Counties Clinton County, IA, Jackson County, IA, Carroll County, IL, Jo Daviess County, IL, Stephenson County, IL, Whiteside County, IL

What was reported inside it

TimeReportWhereRemark
Dec 23, 8:20 PM CSTSNOW 0.44 Nnw Lanark, IL3/8INCH OF NEW SNOW SINCE 1 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 5.6 hours before the alert went out and 61 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Davenport, at 12:00Z on 2008-12-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2008-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 567 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
587 m above ground
0-6 km bulk shear
75 kt
0-1 km storm-relative helicity
567 m²/s²
0-3 km storm-relative helicity
647 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS43 KDVN 231735
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1135 AM CST TUE DEC 23 2008

...MORE SNOW TONIGHT INTO WEDNESDAY...

.PATCHY LIGHT SNOW WILL CONTINUE ACROSS PORTIONS OF THE REGION
THIS AFTERNOON...THEN BECOME MORE WIDESPREAD TONIGHT INTO
WEDNESDAY MORNING AS A DEVELOPING LOW PRESSURE SYSTEM LIFTS OUT OF
THE SOUTHERN PLAINS. SNOW WILL BE HEAVIEST ACROSS FAR EAST CENTRAL
IOWA INTO NORTHWEST ILLINOIS. THE SNOW MAY BE MIXED WITH SLEET AT
TIMES LATE TONIGHT ACROSS SOUTHEAST IOWA INTO WEST CENTRAL
ILLINOIS. IN ADDITION...WINDS WILL INCREASE TONIGHT INTO WEDNESDAY
MORNING...CAUSING AREAS OF BLOWING AND DRIFTING SNOW. 

IAZ040>042-051>053-063>065-076-077-087-240145-
/O.CAN.KDVN.WW.Y.0017.000000T0000Z-081224T0000Z/
/O.UPG.KDVN.WS.A.0011.081224T0000Z-081224T2100Z/
/O.NEW.KDVN.WW.Y.0018.081224T0000Z-081224T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-IOWA-JOHNSON-CEDAR-
KEOKUK-WASHINGTON-JEFFERSON-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MARENGO...IOWA CITY...TIPTON...
SIGOURNEY...WASHINGTON...FAIRFIELD
1135 AM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
12 PM CST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS NOW IN EFFECT FROM 6 PM THIS
EVENING TO 12 PM CST WEDNESDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

LIGHT SNOW WILL REDEVELOP ACROSS EASTERN IOWA THIS EVENING AND
BECOME HEAVY AT TIMES OVERNIGHT AND EARLY WEDNESDAY MORNING. SNOW
ACCUMULATIONS OF 2 TO 5 INCHES WILL BE POSSIBLE BY THE TIME THE
SNOW ENDS MIDDAY WEDNESDAY. IN ADDITION...WINDS WILL BECOME WEST
TO NORTHWEST FROM 15 TO 25 MPH WEDNESDAY MORNING...PRODUCING
AREAS OF BLOWING AND DRIFTING SNOW. 

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW COVERED
ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE DRIVING.


$$

IAZ054-066-ILZ001-002-007-009-240145-
/O.UPG.KDVN.WS.A.0011.081224T0000Z-081224T2100Z/
/O.NEW.KDVN.WS.W.0008.081224T0000Z-081224T2100Z/
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T0000Z/
JACKSON-CLINTON-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...GALENA...
FREEPORT...MOUNT CARROLL...STERLING...ROCK FALLS
1135 AM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...
...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 3 PM
CST WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 6 PM THIS
EVENING TO 3 PM CST WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER
IN EFFECT. A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM
CST THIS AFTERNOON.

LIGHT SNOW WILL CONTINUE THIS AFTERNOON WITH ADDITIONAL
ACCUMULATIONS LESS THAN 1 INCH. HOWEVER...BRISK SOUTH WINDS FROM
15 TO 25 MPH WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW. 

SNOW WILL BECOME HEAVIER AND MORE WIDESPREAD TONIGHT INTO
WEDNESDAY MORNING AS A STORM SYSTEM APPROACHES FROM THE SOUTHERN
PLAINS. ADDITIONAL SNOW ACCUMULATIONS ARE EXPECTED TO RANGE FROM 5
TO 7 INCHES ACROSS THE AREA. WINDS WILL TURN TO THE WEST WEDNESDAY
MORNING AND INCREASE TO 15 TO 25 MPH...RESULTING IN AREAS OF
BLOWING AND DRIFTING SNOW. 

A WINTER STORM WARNING FOR HEAVY SNOW MEANS 6 TO 7 INCHES OR MORE
OF SNOW IS EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY
DANGEROUS OR IMPOSSIBLE...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE
YOUR WINTER SURVIVAL KIT.

$$

IAZ067-068-078-088-089-098-ILZ015>018-024-240145-
/O.UPG.KDVN.WS.A.0011.081224T0000Z-081224T2100Z/
/O.EXT.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-VAN BUREN-ROCK ISLAND-
HENRY IL-BUREAU-PUTNAM-MERCER-
INCLUDING THE CITIES OF...MUSCATINE...BETTENDORF...DAVENPORT...
WAPELLO...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....MOLINE...
ROCK ISLAND...KEWANEE...PRINCETON...HENNEPIN...ALEDO
1135 AM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 12 PM CST
WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

BRISK SOUTH WINDS FROM 15 TO 25 MPH WILL CONTINUE TO PRODUCE AREAS
OF DRIFTING SNOW THIS AFTERNOON. PATCHY LIGHT SNOW WILL
CONTINUE...AND BECOME MORE WIDESPREAD TOWARD EVENING. ADDITIONAL
ACCUMULATIONS THIS AFTERNOON WILL BE LESS THAN AN INCH. 

TONIGHT...SNOW WILL BECOME MORE WIDESPREAD AND HEAVY AT TIMES AS A
LOW PRESSURE SYSTEM APPROACHES FROM THE SOUTHERN PLAINS. SNOW WILL
END BY NOON WEDNESDAY...WITH ADDITIONAL ACCUMULATIONS FROM 3 TO 5
INCHES LIKELY. IN ADDITION...WINDS WILL TURN TO THE WEST WEDNESDAY
MORNING AND INCREASE TO 15 TO 25 MPH...RESULTING IN DRIFTING AND
BLOWING SNOW IN OPEN AREAS. 

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW COVERED
ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE DRIVING.

$$

IAZ099-ILZ025-026-034-035-MOZ009-010-240145-
/O.UPG.KDVN.WS.A.0011.081224T0000Z-081224T2100Z/
/O.EXT.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...FORT MADISON...OQUAWKA...MONMOUTH...
CARTHAGE...MACOMB...MEMPHIS...KAHOKA
1135 AM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 12 PM CST
WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. 

BRISK SOUTH WINDS FROM 15 TO 25 MPH WILL CONTINUE TO PRODUCE AREAS
OF DRIFTING SNOW THIS AFTERNOON. PATCHY LIGHT SNOW WILL
CONTINUE...AND BECOME MORE WIDESPREAD TOWARD EVENING. ADDITIONAL
ACCUMULATIONS THIS AFTERNOON WILL BE LESS THAN AN INCH. 

TONIGHT...SNOW WILL BECOME MORE WIDESPREAD AND HEAVY AT TIMES AS A
LOW PRESSURE SYSTEM APPROACHES FROM THE SOUTHERN PLAINS. THE SNOW
MAY BE MIXED WITH SLEET AT TIMES. THE PRECIPITATION WILL END 
BY NOON WEDNESDAY...WITH ADDITIONAL SNOW ACCUMULATIONS FROM 1 TO
3 INCHES LIKELY. LIGHT ACCUMULATIONS OF SLEET WILL BE POSSIBLE. IN
ADDITION...WINDS WILL TURN TO THE WEST WEDNESDAY MORNING AND
INCREASE TO 15 TO 25 MPH...RESULTING IN DRIFTING AND BLOWING SNOW
IN OPEN AREAS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND SLEET
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS
AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE DRIVING.

$$

SHEETS
5 follow-up statements
000 
WWUS43 KDVN 232203
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
403 PM CST TUE DEC 23 2008

...MORE SNOW TONIGHT INTO WEDNESDAY...

.LIGHT SNOW WILL CONTINUE TO OVERSPREAD THE REGION AND BECOME
HEAVIER TONIGHT AS A DEVELOPING LOW PRESSURE SYSTEM APPROACHES
THE AREA FROM THE SOUTHERN PLAINS. SNOW ACCUMULATIONS WILL BE
HEAVIEST ACROSS FAR EAST CENTRAL IOWA INTO NORTHWEST ILLINOIS. THE
SNOW MAY BE MIXED WITH RAIN...FREEZING RAIN...AND SLEET AT TIMES
THIS EVENING AND OVERNIGHT ACROSS SOUTHEAST IOWA INTO WEST CENTRAL
ILLINOIS. IN ADDITION...WINDS WILL INCREASE AND TURN TO THE WEST
WEDNESDAY MORNING...CAUSING AREAS OF BLOWING AND DRIFTING SNOW.

IAZ054-066-ILZ001-002-007-009-240615-
/O.CON.KDVN.WS.W.0008.081224T0000Z-081224T2100Z/
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T0000Z/
JACKSON-CLINTON-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...GALENA...
FREEPORT...MOUNT CARROLL...STERLING...ROCK FALLS
403 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
AFTERNOON...
...WINTER STORM WARNING REMAINS IN EFFECT 6 PM CST THIS EVENING UNTIL
3 PM CST WEDNESDAY...

A WINTER STORM WARNING IS IN EFFECT FROM 6 PM CST THIS EVENING UNTIL
3 PM CST WEDNESDAY. A WINTER WEATHER ADVISORY REMAINS IN EFFECT
UNTIL 6 PM CST THIS AFTERNOON.

LIGHT SNOW WILL CONTINUE THIS AFTERNOON WITH ADDITIONAL
ACCUMULATIONS LESS THAN 1 INCH. 

SNOW WILL BECOME HEAVIER AND MORE WIDESPREAD TONIGHT INTO
WEDNESDAY MORNING AS A STORM SYSTEM APPROACHES FROM THE SOUTHERN
PLAINS. TOTAL SNOW ACCUMULATIONS ARE EXPECTED TO RANGE FROM 6 TO
8 INCHES ACROSS THE AREA BY WEDNESDAY AFTERNOON. WINDS WILL TURN TO THE
WEST WEDNESDAY MORNING AND INCREASE TO 15 TO 25 MPH...RESULTING IN
AREAS OF BLOWING AND DRIFTING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS 6 TO 7 INCHES OR MORE
OF SNOW IS EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY
DANGEROUS OR IMPOSSIBLE...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE
YOUR WINTER SURVIVAL KIT.

$$

ILZ016>018-240615-
/O.EXT.KDVN.WW.Y.0017.000000T0000Z-081224T2100Z/
HENRY IL-BUREAU-PUTNAM-
INCLUDING THE CITIES OF...KEWANEE...PRINCETON...HENNEPIN
403 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM CST
WEDNESDAY...

THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 3 PM CST
WEDNESDAY. 

LIGHT SNOW WILL CONTINUE...AND BECOME MORE WIDESPREAD TOWARD
EVENING. ADDITIONAL ACCUMULATIONS LATE THIS AFTERNOON WILL BE
LESS THAN AN INCH. THE SNOW MAY BE MIXED WITH SLEET OR FREEZING
DRIZZLE AT TIMES. 

TONIGHT...SNOW WILL BECOME MORE WIDESPREAD...AND MAY BE HEAVY AT
TIMES AS A LOW PRESSURE SYSTEM APPROACHES FROM THE SOUTHERN
PLAINS. SNOW WILL END EARLY WEDNESDAY AFTERNOON...WITH ADDITIONAL
ACCUMULATIONS FROM 3 TO 5 INCHES LIKELY. IN ADDITION...WINDS WILL
TURN TO THE WEST WEDNESDAY MORNING AND INCREASE TO 15 TO 25
MPH...RESULTING IN DRIFTING AND BLOWING SNOW IN OPEN AREAS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET AND
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLICK...SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND BE
CAREFUL WHILE DRIVING.

$$

IAZ067-068-078-088-089-098-ILZ015-024-240615-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-VAN BUREN-ROCK ISLAND-
MERCER-
INCLUDING THE CITIES OF...MUSCATINE...BETTENDORF...DAVENPORT...
WAPELLO...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....MOLINE...
ROCK ISLAND...ALEDO
403 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

LIGHT SNOW WILL CONTINUE CONTINUE LATE THIS AFTERNOON. ADDITIONAL
ACCUMULATIONS WILL BE LESS THAN ONE INCH. 

TONIGHT...SNOW WILL BECOME MORE WIDESPREAD AND HEAVY AT TIMES AS
A LOW PRESSURE SYSTEM APPROACHES FROM THE SOUTHERN PLAINS. 
THE SNOW MAY BE MIXED WITH SLEET AT TIMES OVERNIGHT. SNOW WILL
END BY NOON WEDNESDAY...WITH ADDITIONAL ACCUMULATIONS FROM 3 TO 5
INCHES. IN ADDITION...WINDS WILL TURN TO THE WEST WEDNESDAY
MORNING AND INCREASE TO 15 TO 25 MPH...RESULTING IN DRIFTING AND
BLOWING SNOW IN OPEN AREAS.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

IAZ040>042-051>053-063>065-076-077-087-240615-
/O.CON.KDVN.WW.Y.0018.081224T0000Z-081224T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-IOWA-JOHNSON-CEDAR-
KEOKUK-WASHINGTON-JEFFERSON-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MARENGO...IOWA CITY...TIPTON...
SIGOURNEY...WASHINGTON...FAIRFIELD
403 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

LIGHT SNOW WILL CONTINUE TO OVERSPREAD THE AREA LATE THIS
AFTERNOON...THEN BECOME HEAVY AT TIMES OVERNIGHT. THE SNOW MAY BE
MIXED WITH SLEET AND FREEZING RAIN THIS EVENING. SNOW
ACCUMULATIONS OF 2 TO 5 INCHES WILL BE POSSIBLE BY THE TIME THE
SNOW ENDS MIDDAY WEDNESDAY. IN ADDITION...WINDS WILL BECOME WEST
TO NORTHWEST FROM 15 TO 25 MPH WEDNESDAY MORNING...PRODUCING AREAS
OF BLOWING AND DRIFTING SNOW.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

IAZ099-ILZ025-026-034-035-MOZ009-010-240615-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...FORT MADISON...OQUAWKA...MONMOUTH...
CARTHAGE...MACOMB...MEMPHIS...KAHOKA
403 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

A MIXTURE OF SNOW...SLEET AND LIGHT FREEZING RAIN WILL CONTINUE
ACROSS THE AREA LATE THIS AFTERNOON. SNOW AND SLEET ACCUMULATIONS
WILL BE LESS THAN AN INCH. ANY ICE ACCUMULATION FROM FREEZING RAIN
WILL BE LESS THAN A QUARTER INCH. 

TONIGHT...SNOW WILL BECOME MORE WIDESPREAD AND HEAVY AT TIMES AS
A LOW PRESSURE SYSTEM APPROACHES FROM THE SOUTHERN PLAINS. THE
SNOW MAY BE MIXED WITH SLEET AND FREEZING RAIN...ESPECIALLY IN THE
EVENING. THE PRECIPITATION WILL END BY NOON WEDNESDAY...WITH
ADDITIONAL SNOW AND SLEET ACCUMULATIONS FROM 2 TO 4 INCHES. ANY
ICE ACCUMULATION WILL BE LESS THAN A QUARTER INCH. IN
ADDITION...WINDS WILL TURN TO THE WEST WEDNESDAY MORNING AND
INCREASE TO 15 TO 25 MPH...RESULTING IN DRIFTING AND BLOWING SNOW
IN OPEN AREAS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND SLEET
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS
AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE DRIVING.

$$

SHEETS
000 
WWUS43 KDVN 240010
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
610 PM CST TUE DEC 23 2008

...MORE SNOW TONIGHT INTO WEDNESDAY...

.LIGHT SNOW WILL CONTINUE TO OVERSPREAD THE REGION AND BECOME
HEAVIER TONIGHT AS A DEVELOPING LOW PRESSURE SYSTEM APPROACHES
THE AREA FROM THE SOUTHERN PLAINS. SNOW ACCUMULATIONS WILL BE
HEAVIEST ACROSS FAR EAST CENTRAL IOWA INTO NORTHWEST ILLINOIS.
THE SNOW MAY BE MIXED WITH RAIN...FREEZING RAIN...AND SLEET AT
TIMES THIS EVENING AND OVERNIGHT ACROSS SOUTHEAST IOWA INTO WEST
CENTRAL ILLINOIS. IN ADDITION...WINDS WILL INCREASE AND TURN TO
THE WEST WEDNESDAY MORNING...CAUSING AREAS OF BLOWING AND
DRIFTING SNOW.

IAZ054-066-ILZ001-002-007-009-240815-
/O.EXP.KDVN.WW.Y.0017.000000T0000Z-081224T0000Z/
/O.CON.KDVN.WS.W.0008.000000T0000Z-081224T2100Z/
JACKSON-CLINTON-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...GALENA...
FREEPORT...MOUNT CARROLL...STERLING...ROCK FALLS
610 PM CST TUE DEC 23 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY...
...WINTER WEATHER ADVISORY NO LONGER IN EFFECT...

THE WINTER WEATHER ADVISORY HAS BEEN REPLACED BY A WINTER
STORM WARNING...WHICH REMAINS IN EFFECT UNTIL 3 PM CST WEDNESDAY.

SNOW WILL BECOME HEAVIER AND MORE WIDESPREAD LATER TONIGHT INTO
WEDNESDAY MORNING AS A STORM SYSTEM APPROACHES FROM THE SOUTHERN
PLAINS. TOTAL SNOW ACCUMULATIONS ARE EXPECTED TO RANGE FROM 6 TO 8
INCHES ACROSS THE AREA BY WEDNESDAY AFTERNOON. WINDS WILL TURN TO
THE WEST WEDNESDAY MORNING AND INCREASE TO 15 TO 25 MPH...
RESULTING IN AREAS OF BLOWING AND DRIFTING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS 6 TO 7 INCHES OR MORE
OF SNOW IS EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY
DANGEROUS OR IMPOSSIBLE...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE
YOUR WINTER SURVIVAL KIT.

$$

IAZ040>042-051>053-063>065-076-077-087-240815-
/O.CON.KDVN.WW.Y.0018.000000T0000Z-081224T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-IOWA-JOHNSON-CEDAR-
KEOKUK-WASHINGTON-JEFFERSON-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MARENGO...IOWA CITY...TIPTON...
SIGOURNEY...WASHINGTON...FAIRFIELD
610 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

LIGHT SNOW WILL OVERSPREAD THE AREA LATER THIS EVENING...THEN
BECOME HEAVY AT TIMES OVERNIGHT. THE SNOW MAY BE MIXED WITH SLEET
AND FREEZING RAIN FOR A BRIEF TIME THIS EVENING. SNOW
ACCUMULATIONS OF 2 TO 5 INCHES WILL BE POSSIBLE BY THE TIME THE
SNOW ENDS MIDDAY WEDNESDAY. IN ADDITION...WINDS WILL BECOME WEST
TO NORTHWEST FROM 15 TO 25 MPH WEDNESDAY MORNING...PRODUCING AREAS
OF BLOWING AND DRIFTING SNOW.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

IAZ067-068-078-088-089-098-ILZ015-024-240815-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-VAN BUREN-ROCK ISLAND-
MERCER-
INCLUDING THE CITIES OF...MUSCATINE...BETTENDORF...DAVENPORT...
WAPELLO...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....MOLINE...
ROCK ISLAND...ALEDO
610 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

THIS EVENING LIGHT SNOW WILL CONTINUE ACROSS THE AREA...MIXED AT
TIMES WITH SLEET OR FREEZING RAIN.  SNOW AND SLEET
ACCUMULATIONS WILL BE LESS THAN AN INCH.

SNOW WILL BECOME MORE WIDESPREAD AND HEAVY AT TIMES LATER TONIGHT
AS A LOW PRESSURE SYSTEM APPROACHES FROM THE SOUTHERN PLAINS. THE
SNOW MAY BE MIXED WITH SLEET AT TIMES OVERNIGHT. SNOW WILL END BY
NOON WEDNESDAY...WITH ADDITIONAL ACCUMULATIONS FROM 3 TO 5 INCHES.
IN ADDITION...WINDS WILL TURN TO THE WEST WEDNESDAY MORNING AND
INCREASE TO 15 TO 25 MPH...RESULTING IN DRIFTING AND BLOWING SNOW
IN OPEN AREAS.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

IAZ099-ILZ025-026-034-035-MOZ009-010-240815-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...FORT MADISON...OQUAWKA...MONMOUTH...
CARTHAGE...MACOMB...MEMPHIS...KAHOKA
610 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

A WINTRY MIX OF LIGHT SNOW...SLEET AND FREEZING RAIN WILL
CONTINUE ACROSS THE AREA THIS EVENING. SNOW AND SLEET
ACCUMULATIONS WILL BE LESS THAN AN INCH. ANY ICE ACCUMULATION FROM
FREEZING RAIN WILL BE LESS THAN A QUARTER INCH.

SNOW WILL SPREAD BACK OVER THE AREA AGAIN LATER TONIGHT. IT WILL
BE HEAVY AT TIMES AS A LOW PRESSURE SYSTEM APPROACHES FROM THE
SOUTHERN PLAINS. THE SNOW MAY BE MIXED WITH SLEET AND FREEZING
RAIN. THE PRECIPITATION WILL END BY NOON WEDNESDAY...WITH
ADDITIONAL SNOW AND SLEET ACCUMULATIONS FROM 2 TO 4 INCHES. ANY
ICE ACCUMULATION WILL BE LESS THAN A QUARTER INCH. IN ADDITION...
WINDS WILL TURN TO THE WEST WEDNESDAY MORNING AND INCREASE TO 15
TO 25 MPH...RESULTING IN DRIFTING AND BLOWING SNOW IN OPEN AREAS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND SLEET
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS
AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE DRIVING.

$$

ILZ016>018-240815-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T2100Z/
HENRY IL-BUREAU-PUTNAM-
INCLUDING THE CITIES OF...KEWANEE...PRINCETON...HENNEPIN
610 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY. 

A WINTRY MIX OF LIGHT SNOW...SLEET...AND FREEZING RAIN WILL CONTINUE
THIS EVENING. ADDITIONAL ACCUMULATIONS LATE THIS AFTERNOON WILL
BE LESS THAN AN INCH. ANY ICE ACCUMULATION FROM FREEZING RAIN
WILL BE LESS THAN A QUARTER INCH.

LATER TONIGHT...SNOW WILL BECOME MORE WIDESPREAD...AND MAY BE
HEAVY AT TIMES AS A LOW PRESSURE SYSTEM APPROACHES FROM THE
SOUTHERN PLAINS. SNOW WILL END EARLY WEDNESDAY AFTERNOON...WITH
ADDITIONAL ACCUMULATIONS FROM 3 TO 5 INCHES LIKELY. IN
ADDITION...WINDS WILL TURN TO THE WEST WEDNESDAY MORNING AND
INCREASE TO 15 TO 25 MPH... RESULTING IN DRIFTING AND BLOWING SNOW
IN OPEN AREAS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET AND
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLICK...SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND BE
CAREFUL WHILE DRIVING.

$$
000 
WWUS43 KDVN 240215
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
815 PM CST TUE DEC 23 2008

...MORE SNOW TONIGHT INTO WEDNESDAY...

.FREEZING DRIZZLE IS EXPECTED TO CONTINUE TO AFFECT THE AREA THIS
EVENING. LATER THIS EVENING...LIGHT SNOW WILL OVERSPREAD THE
REGION AND BECOME HEAVIER OVERNIGHT AS A DEVELOPING LOW PRESSURE
SYSTEM APPROACHES THE AREA FROM THE SOUTHERN PLAINS. SNOW
ACCUMULATIONS WILL BE HEAVIEST ACROSS FAR EAST CENTRAL IOWA INTO
NORTHWEST ILLINOIS. THE SNOW MAY BE MIXED WITH RAIN...FREEZING
RAIN...AND SLEET AT TIMES ACROSS SOUTHEAST IOWA INTO WEST CENTRAL
ILLINOIS. IN ADDITION...WINDS WILL INCREASE AND TURN TO THE WEST
WEDNESDAY MORNING...CAUSING AREAS OF BLOWING AND DRIFTING SNOW.

IAZ054-066-ILZ001-002-007-009-241015-
/O.CON.KDVN.WS.W.0008.000000T0000Z-081224T2100Z/
JACKSON-CLINTON-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...GALENA...
FREEPORT...MOUNT CARROLL...STERLING...ROCK FALLS
815 PM CST TUE DEC 23 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY. 

FREEZING DRIZZLE WILL AFFECT THE AREA THIS EVENING...MAKING ROADS
AND EXPOSED SURFACES SLICK AND HAZARDOUS. LATER TONIGHT AND
WEDNESDAY MORNING SNOW WILL OVERSPREAD THE AREA AS A STORM SYSTEM
APPROACHES FROM THE SOUTHERN PLAINS. TOTAL SNOW ACCUMULATIONS ARE
EXPECTED TO RANGE FROM 6 TO 8 INCHES ACROSS THE AREA BY WEDNESDAY
AFTERNOON. WINDS WILL TURN TO THE WEST WEDNESDAY MORNING AND
INCREASE TO 15 TO 25 MPH... RESULTING IN AREAS OF BLOWING AND
DRIFTING SNOW.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS 6 TO 7 INCHES OR MORE
OF SNOW IS EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY
DANGEROUS OR IMPOSSIBLE...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE
YOUR WINTER SURVIVAL KIT.

$$

IAZ040>042-051>053-063>065-076-077-087-241015-
/O.CON.KDVN.WW.Y.0018.000000T0000Z-081224T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-IOWA-JOHNSON-CEDAR-
KEOKUK-WASHINGTON-JEFFERSON-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MARENGO...IOWA CITY...TIPTON...
SIGOURNEY...WASHINGTON...FAIRFIELD
815 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

FREEZING DRIZZLE WILL AFFECT THE AREA THIS EVENING...MAKING ROADS
AND EXPOSED SURFACES SLICK AND HAZARDOUS. OVERNIGHT TONIGHT LIGHT
SNOW WILL OVERSPREAD THE AREA...BECOMING HEAVY AT TIMES. THE SNOW
MAY BE MIXED WITH SLEET AND FREEZING RAIN FOR A BRIEF TIME AS IT
BEGINS. SNOW ACCUMULATIONS OF 2 TO 5 INCHES WILL BE POSSIBLE BY
THE TIME THE SNOW ENDS MIDDAY WEDNESDAY. IN ADDITION...WINDS WILL
BECOME WEST TO NORTHWEST FROM 15 TO 25 MPH WEDNESDAY
MORNING...PRODUCING AREAS OF BLOWING AND DRIFTING SNOW.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

IAZ067-068-078-088-089-098-ILZ015-024-241015-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-VAN BUREN-ROCK ISLAND-
MERCER-
INCLUDING THE CITIES OF...MUSCATINE...BETTENDORF...DAVENPORT...
WAPELLO...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....MOLINE...
ROCK ISLAND...ALEDO
815 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

THIS EVENING LIGHT SNOW WILL CONTINUE ACROSS THE AREA...MIXED AT
TIMES WITH SLEET OR FREEZING RAIN.  SNOW AND SLEET ACCUMULATIONS
WILL BE LESS THAN AN INCH. FREEZING DRIZZLE IS ALSO
EXPECTED...WHICH CAN MAKE ROADS AND OTHER EXPOSED SURFACES SLICK
AND HAZARDOUS.

SNOW WILL OVERSPREAD THE AREA AND BECOME HEAVY AT TIMES OVERNIGHT
AS A LOW PRESSURE SYSTEM APPROACHES FROM THE SOUTHERN PLAINS. THE
SNOW MAY BE MIXED WITH SLEET AT TIMES. SNOW WILL END BY NOON
WEDNESDAY...WITH ADDITIONAL ACCUMULATIONS FROM 3 TO 5 INCHES. IN
ADDITION...WINDS WILL TURN TO THE WEST WEDNESDAY MORNING AND
INCREASE TO 15 TO 25 MPH...RESULTING IN DRIFTING AND BLOWING SNOW
IN OPEN AREAS.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

IAZ099-ILZ025-026-034-035-MOZ009-010-241015-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...FORT MADISON...OQUAWKA...MONMOUTH...
CARTHAGE...MACOMB...MEMPHIS...KAHOKA
815 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

A WINTRY MIX OF LIGHT SNOW...SLEET AND FREEZING RAIN WILL
CONTINUE ACROSS THE AREA THIS EVENING. SNOW AND SLEET
ACCUMULATIONS WILL BE LESS THAN AN INCH. ANY ICE ACCUMULATION
FROM FREEZING RAIN WILL BE LESS THAN A QUARTER INCH.

SNOW WILL SPREAD BACK OVER THE AREA AGAIN LATER TONIGHT. IT WILL
BE HEAVY AT TIMES AS A LOW PRESSURE SYSTEM APPROACHES FROM THE
SOUTHERN PLAINS. THE SNOW MAY BE MIXED WITH SLEET AND FREEZING
RAIN. THE PRECIPITATION WILL END BY NOON WEDNESDAY...WITH
ADDITIONAL SNOW AND SLEET ACCUMULATIONS FROM 2 TO 4 INCHES. ANY
ICE ACCUMULATION WILL BE LESS THAN A QUARTER INCH. IN ADDITION...
WINDS WILL TURN TO THE WEST WEDNESDAY MORNING AND INCREASE TO
15 TO 25 MPH...RESULTING IN DRIFTING AND BLOWING SNOW IN OPEN
AREAS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND SLEET
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS
AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE DRIVING.

$$

ILZ016>018-241015-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T2100Z/
HENRY IL-BUREAU-PUTNAM-
INCLUDING THE CITIES OF...KEWANEE...PRINCETON...HENNEPIN
815 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY. 

A WINTRY MIX OF LIGHT SNOW...SLEET...AND FREEZING RAIN WILL
CONTINUE THIS EVENING. ADDITIONAL ACCUMULATIONS WILL BE LESS THAN
AN INCH. ANY ICE ACCUMULATION FROM FREEZING RAIN WILL BE LESS THAN
A QUARTER INCH.

SNOW WILL SPREAD BACK OVER THE AREA AGAIN LATER TONIGHT. THE SNOW MAY
BE HEAVY AT TIMES AS A LOW PRESSURE SYSTEM APPROACHES FROM THE
SOUTHERN PLAINS. SNOW WILL END EARLY WEDNESDAY AFTERNOON...WITH
ADDITIONAL ACCUMULATIONS FROM 3 TO 5 INCHES LIKELY. IN ADDITION...
WINDS WILL TURN TO THE WEST WEDNESDAY MORNING AND INCREASE TO 15
TO 25 MPH... RESULTING IN DRIFTING AND BLOWING SNOW IN OPEN AREAS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET AND
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLICK...SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND BE
CAREFUL WHILE DRIVING.

$$

LE
000 
WWUS43 KDVN 240422
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1022 PM CST TUE DEC 23 2008

...MORE SNOW TONIGHT INTO WEDNESDAY...

.FREEZING DRIZZLE IS EXPECTED TO CONTINUE TO AFFECT THE AREA
TONIGHT. AFTER 2 AM...LIGHT SNOW WILL OVERSPREAD THE REGION AND
BECOME HEAVIER TOWARDS MORNING AS A DEVELOPING LOW PRESSURE SYSTEM
APPROACHES THE AREA FROM THE SOUTHERN PLAINS. SNOW ACCUMULATIONS
WILL BE HEAVIEST ACROSS FAR EAST CENTRAL IOWA INTO NORTHWEST
ILLINOIS. THE SNOW WILL BE MIXED WITH RAIN...FREEZING RAIN...AND
SLEET AT TIMES ACROSS SOUTHEAST IOWA INTO WEST CENTRAL ILLINOIS.
IN ADDITION...WINDS WILL INCREASE AND TURN TO THE WEST WEDNESDAY
MORNING...CAUSING AREAS OF BLOWING AND DRIFTING SNOW.

IAZ054-066-ILZ001-002-007-009-241230-
/O.CON.KDVN.WS.W.0008.000000T0000Z-081224T2100Z/
JACKSON-CLINTON-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...GALENA...
FREEPORT...MOUNT CARROLL...STERLING...ROCK FALLS
1022 PM CST TUE DEC 23 2008

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY. 

FREEZING DRIZZLE WILL AFFECT THE AREA TONIGHT...MAKING ROADS AND
EXPOSED SURFACES SLICK AND HAZARDOUS. AFTER 2 AM TONIGHT...SNOW
WILL OVERSPREAD THE AREA AS A STORM SYSTEM APPROACHES FROM THE
SOUTHERN PLAINS. WIDESPREAD TOTAL SNOW ACCUMULATIONS OF 4 TO 6
INCHES ARE EXPECTED ACROSS THE AREA BY WEDNESDAY AFTERNOON...WITH
SOME ISOLATED HIGHER AMOUNTS. WINDS WILL TURN TO THE WEST
WEDNESDAY MORNING AND INCREASE TO 15 TO 25 MPH... RESULTING IN
AREAS OF BLOWING AND DRIFTING SNOW.

A WINTER STORM WARNING MEANS 6 INCHES OR MORE OF SNOW COMBINED
WITH STRONG WINDS AND SLEET...AND/OR FREEZING RAIN IS EXPECTED OR
OCCURRING. THIS WILL MAKE TRAVEL VERY DANGEROUS OR IMPOSSIBLE...SO
ONLY TRAVEL IN AN EMERGENCY AND TAKE YOUR WINTER SURVIVAL KIT.

$$

IAZ040>042-051>053-063>065-076-077-087-241230-
/O.CON.KDVN.WW.Y.0018.000000T0000Z-081224T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-IOWA-JOHNSON-CEDAR-
KEOKUK-WASHINGTON-JEFFERSON-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MARENGO...IOWA CITY...TIPTON...
SIGOURNEY...WASHINGTON...FAIRFIELD
1022 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

FREEZING DRIZZLE WILL AFFECT THE AREA TONIGHT...MAKING ROADS
AND EXPOSED SURFACES SLICK AND HAZARDOUS. AFTER 2 AM...LIGHT SNOW
WILL OVERSPREAD THE AREA AGAIN...BECOMING HEAVY AT TIMES TOWARDS
MORNING. THE SNOW MAY BE MIXED WITH SLEET AND FREEZING RAIN FOR A
BRIEF TIME AS IT BEGINS. SNOW ACCUMULATIONS OF 2 TO 5 INCHES WILL
BE POSSIBLE BY THE TIME THE SNOW ENDS MIDDAY WEDNESDAY. IN
ADDITION...WINDS WILL BECOME WEST TO NORTHWEST FROM 15 TO 25 MPH
WEDNESDAY MORNING... PRODUCING AREAS OF BLOWING AND DRIFTING SNOW.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

IAZ067-068-078-088-089-098-ILZ015-024-241230-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-VAN BUREN-ROCK ISLAND-
MERCER-
INCLUDING THE CITIES OF...MUSCATINE...BETTENDORF...DAVENPORT...
WAPELLO...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....MOLINE...
ROCK ISLAND...ALEDO
1022 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

FREEZING DRIZZLE WILL AFFECT THE AREA TONIGHT...MAKING ROADS
AND EXPOSED SURFACES SLICK AND HAZARDOUS. AFTER 2 AM...LIGHT SNOW
WILL OVERSPREAD THE AREA AGAIN...BECOMING HEAVY AT TIMES TOWARDS
MORNING. THE SNOW MAY BE MIXED WITH SLEET AT TIMES. SNOW WILL END
BY NOON WEDNESDAY...WITH ADDITIONAL ACCUMULATIONS FROM 3 TO 5
INCHES. IN ADDITION...WINDS WILL TURN TO THE WEST WEDNESDAY
MORNING AND INCREASE TO 15 TO 25 MPH...RESULTING IN DRIFTING AND
BLOWING SNOW IN OPEN AREAS.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

IAZ099-ILZ025-026-034-035-MOZ009-010-241230-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...FORT MADISON...OQUAWKA...MONMOUTH...
CARTHAGE...MACOMB...MEMPHIS...KAHOKA
1022 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 12 PM CST
WEDNESDAY. 

FREEZING DRIZZLE WILL AFFECT THE AREA TONIGHT...MAKING ROADS
AND EXPOSED SURFACES SLICK AND HAZARDOUS. AFTER 2 AM...A WINTRY
MIX OF LIGHT SNOW...SLEET AND FREEZING RAIN WILL OVERSPREAD THE AREA
AGAIN...BECOMING HEAVY AT TIMES TOWARDS MORNING. THE PRECIPITATION
WILL END BY NOON WEDNESDAY...WITH ADDITIONAL SNOW AND SLEET
ACCUMULATIONS FROM 1 TO 3 INCHES. ANY ICE ACCUMULATION WILL BE
LESS THAN A QUARTER INCH. IN ADDITION... WINDS WILL TURN TO THE
WEST WEDNESDAY MORNING AND INCREASE TO 15 TO 25 MPH...RESULTING IN
DRIFTING AND BLOWING SNOW IN OPEN AREAS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND SLEET
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS
AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE DRIVING.

$$

ILZ016>018-241230-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T2100Z/
HENRY IL-BUREAU-PUTNAM-
INCLUDING THE CITIES OF...KEWANEE...PRINCETON...HENNEPIN
1022 PM CST TUE DEC 23 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST
WEDNESDAY. 

FREEZING DRIZZLE WILL AFFECT THE AREA TONIGHT...MAKING ROADS
AND EXPOSED SURFACES SLICK AND HAZARDOUS. AFTER 3 AM...A WINTRY
MIX OF LIGHT SNOW...SLEET AND FREEZING RAIN WILL OVERSPREAD THE AREA
AGAIN...BECOMING HEAVY AT TIMES TOWARDS MORNING. THE PRECIPITATION WILL
END EARLY WEDNESDAY AFTERNOON... WITH ADDITIONAL ACCUMULATIONS
FROM 2 TO 4 INCHES LIKELY. IN ADDITION... WINDS WILL TURN TO THE
WEST WEDNESDAY MORNING AND INCREASE TO 15 TO 25 MPH... RESULTING
IN DRIFTING AND BLOWING SNOW IN OPEN AREAS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET AND
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLICK...SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND BE
CAREFUL WHILE DRIVING.

$$
000 
WWUS43 KDVN 240920
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
320 AM CST WED DEC 24 2008

...FAST MOVING SYSTEM TO BRING MORE SNOW THROUGH THIS MORNING...

.A FAST MOVING LOW PRESSURE SYSTEM NOW OVER EASTERN KANSAS WILL MOVE
QUICKLY NORTHEAST ALONG AN ADVANCING ARCTIC FRONT. THIS SYSTEM WILL
PRODUCE 2 TO 4 INCHES OF FRESH SNOW WITH ISOLATED HIGHER AMOUNTS
POSSIBLE OF NEAR 5 INCHES. NORTHWEST WINDS OF 15 TO 25 WITH SOME
GUSTS OVER 30 MPH WILL DEVELOP BY LATE MORNING TO ALLOW FOR SOME
BLOWING SNOW IN OPEN AND RURAL AREAS. COMBINED WITH FALLING
TEMPERATURES INTO THE TEENS...THIS WILL RESULT IN SNOW COVERED
ROADS.

IAZ054-066-ILZ001-002-007-009-241730-
/O.CAN.KDVN.WS.W.0008.000000T0000Z-081224T2100Z/
/O.EXB.KDVN.WW.Y.0017.000000T0000Z-081224T2100Z/
JACKSON-CLINTON-JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...MAQUOKETA...CLINTON...GALENA...
FREEPORT...MOUNT CARROLL...STERLING...ROCK FALLS
320 AM CST WED DEC 24 2008

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON. THE WINTER STORM WARNING HAS BEEN CANCELLED.

A FAST MOVING DISTURBANCE WILL PRODUCE 1 TO 4 INCHES OF SNOW WITH
ISOLATED 5 INCH AMOUNTS POSSIBLE ALONG A OTTUMWA IOWA TO STERLING
ILLINOIS LINE. BY MID DAY...NORTHWEST WINDS WILL INCREASE TO 15
TO 25 MPH WITH SOME GUSTS TO OVER 30 MPH RESULTING IN CONSIDERABLE
DRIFTING SNOW AND SOME BLOWING SNOW...MAINLY IN OPEN AND RURAL
AREAS. THIS WITH FALLING TEMPERATURES INTO THE TEENS WILL RESULT
IN POOR DRIVING CONDITIONS ON MANY AREA ROADWAYS.

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND SLEET
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS
AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE DRIVING.


$$

ILZ025-026-034-035-241030-
/O.CAN.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
HENDERSON-WARREN-HANCOCK-MCDONOUGH-
INCLUDING THE CITIES OF...OQUAWKA...MONMOUTH...CARTHAGE...MACOMB
320 AM CST WED DEC 24 2008

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS CANCELLED THE
WINTER WEATHER ADVISORY. 

THE THREAT FOR SIGNIFICANT SNOWFALL HAS ENDED. ADDITIONAL SNOW
ACCUMULATIONS UP TO AN INCH ARE POSSIBLE UNTIL LATE MORNING.

$$

ILZ016>018-241030-
/O.CAN.KDVN.WW.Y.0017.000000T0000Z-081224T2100Z/
HENRY IL-BUREAU-PUTNAM-
INCLUDING THE CITIES OF...KEWANEE...PRINCETON...HENNEPIN
320 AM CST WED DEC 24 2008

...WINTER WEATHER ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS CANCELLED THE
WINTER WEATHER ADVISORY. 

THE THREAT FOR SIGNIFICANT SNOWFALL HAS ENDED. ADDITIONAL SNOW
ACCUMULATIONS UP TO AN INCH ARE POSSIBLE UNTIL LATE MORNING.

$$

IAZ040>042-051>053-063>065-076-077-087-241730-
/O.CON.KDVN.WW.Y.0018.000000T0000Z-081224T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-IOWA-JOHNSON-CEDAR-
KEOKUK-WASHINGTON-JEFFERSON-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MARENGO...IOWA CITY...TIPTON...
SIGOURNEY...WASHINGTON...FAIRFIELD
320 AM CST WED DEC 24 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
TODAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY.

A FAST MOVING DISTURBANCE WILL PRODUCE 1 TO 4 INCHES OF SNOW WITH
ISOLATED 5 INCH AMOUNTS POSSIBLE ALONG A OTTUMWA IOWA TO STERLING
ILLINOIS LINE. BY MID DAY...NORTHWEST WINDS WILL INCREASE TO 15
TO 25 MPH WITH SOME GUSTS TO OVER 30 MPH RESULTING IN CONSIDERABLE
DRIFTING SNOW AND SOME BLOWING SNOW...MAINLY IN OPEN AND RURAL
AREAS. THIS WITH FALLING TEMPERATURES INTO THE TEENS WILL RESULT
IN POOR DRIVING CONDITIONS ON MANY AREAS ROADWAYS.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

IAZ067-068-078-088-089-098-099-ILZ015-024-MOZ009-010-241730-
/O.CON.KDVN.WW.Y.0017.000000T0000Z-081224T1800Z/
MUSCATINE-SCOTT-LOUISA-HENRY IA-DES MOINES-VAN BUREN-LEE-
ROCK ISLAND-MERCER-SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MUSCATINE...BETTENDORF...DAVENPORT...
WAPELLO...MOUNT PLEASANT...BURLINGTON...KEOSAUQUA....
FORT MADISON...MOLINE...ROCK ISLAND...ALEDO...MEMPHIS...KAHOKA
320 AM CST WED DEC 24 2008

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST
TODAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TODAY.

A FAST MOVING DISTURBANCE WILL PRODUCE 1 TO 4 INCHES OF SNOW WITH
ISOLATED 5 INCH AMOUNTS POSSIBLE ALONG A OTTUMWA IOWA TO STERLING
ILLINOIS LINE. BY MID DAY...NORTHWEST WINDS WILL INCREASE TO 15 TO
25 MPH WITH SOME GUSTS TO OVER 30 MPH RESULTING IN CONSIDERABLE
DRIFTING SNOW AND SOME BLOWING SNOW...MAINLY IN OPEN AND RURAL
AREAS NORTH OF HIGHWAY 34. THIS WITH FALLING TEMPERATURES INTO THE
TEENS WILL RESULT IN POOR DRIVING CONDITIONS ON MANY AREAS
ROADWAYS.

A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW
WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLICK...SNOW
COVERED ROADS AND LIMITED VISIBILITIES...AND BE CAREFUL WHILE
DRIVING.

$$

NICHOLS

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Quad Cities, IA wrote its last area forecast discussion before this winter storm warning went out at Dec 23, 3:25 AM CST, 8 hours 10 minutes earlier.

Area forecast discussion, Dec 23, 3:25 AM CST, 8 hours 10 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
325 AM CST TUE DEC 23 2008

.SYNOPSIS...
UPPER MIDWEST UNDER RETURN SE LOW LEVEL FLOW WITH EMBEDDED UPPER
LEVEL DISTURBANCES IN FAST SW UPPER LEVEL JET PRODUCING LIGHT TO
MODERATE SNOW AS ARCTIC AIR RETREATS AND TEMPERATURES RISE INTO THE
TEENS. RADAR AND SURFACE OBSERVATION REPORTS SUGGEST LIGHT SNOW
AMOUNT AOB HALF INCH TO A TRACE SOUTH OF I-80 WITH WIDESPREAD HALF TO
ONE PLUS INCH AMOUNTS NORTH OF I-80 AS OF 2 AM. SATELLITE AND SURFACE
PRESSURE FALL RISE COUPLETS SUPPORT AREAS OF LIGHT SNOW TO REDEVELOP
UPSTREAM FOR THE NEXT 12 HOURS ALONG AND ON SOUTH SIDE OF UPPER JET.
SE WINDS OF 10 TO 20 PLUS MPH ARE ALLOWING FOR SOME DRIFTING OF NEW
SNOW AND EXISTING SNOW PACK.

&&

.SHORT TERM...TODAY AND TONIGHT...
NO MAJOR CHANGES MADE TO FORECAST...KEEPING WINTER WEATHER ADVISORY
TODAY AS EPISODES OF SNOW TO PASS OVER AREA WITH ADDITIONAL 1 UP TO
LOCALLY 4 PLUS INCHES AND SE WINDS OF 10 TO 20 WITH SOME GUSTS TO 25
MPH TO ALLOW MINOR BLOWING SNOW AND CONSIDERABLE DRIFTING OF SNOW
TODAY. TEMPERATURES TO RISE INTO MID TO UPPER 20S BUT NOT ENOUGH TO
ALLOW MUCH MELTING OF SNOW ON ROADS ANOTHER REASON KEEPING ADVISORY
GOING.  MODEL INITIALIZATION AND VERIFICATION FAIR TO POOR WITH
MOISTURE FEEDBACK ISSUES AND USED FORCING AND CONCEPTUAL MODELS
MOST HEAVILY WEIGHTED TOWARD GFS AND UKMET WITH SOME INPUTS FROM
HI-RES ECMWF.  VERTICAL UPPER AIR ANALYSIS STILL SUGGESTS SOME
SLEET POSSIBLE SOUTH OF HIGHWAY 34 THIS PM INTO EVENING HOURS AND
KEPT MIX THERE.  FORCING PROFILES OF WARM ADVECTION WING TOOL
SUGGEST SOME BANDED NATURE TO PRECIPITATION THIS PM SO SNOW AMOUNTS
COULD BE QUITE VARIABLE TODAY.  TONIGHT...KEPT WINTER WEATHER WATCH
AS FAST MOVING SHORT WAVE PASSES OVER REGION FROM SOUTHERN PLAINS.
HEAVIEST PRECIPITATION TO OCCUR AFTER MIDNIGHT BUT EVIDENCE OF
CONTINUED EVENING BANDING OF PRECIPITATION TO CONTINUE FOR DAY SHIFT
TO RECONSIDER. TEMPERATURES TO REMAIN NEARLY STEADY THROUGH OVERNIGHT
HOURS WITHIN SFC LOW PASSAGE NEAR OR ALONG FAVORED TRACK OF SGF TO
UIN TO NEAR CHI WITH INTENSITY KEY ISSUE. FORCING TOOLS OF VARIOUS
MODEL SOLUTIONS SUGGEST ANYWHERE FROM 2 TO 5 INCHES UP TO 4 TO 8
INCHES WITH SYSTEM TONIGHT INTO WEDNESDAY DEPENDING ON HOW SYSTEM
INTENSIFIES AND PHASES.   HENCE TOUGH FORECAST WITH ABOVE AVERAGE
UNCERTAINTY WITH MESO-SCALE NON-LINEAR PROCESSES SUPPORTS KEEPING
WITH WATCH ATTM. SOME SLEET TO MIX SOUTH OF HIGHWAY 34 KEPT IN
FORECAST THROUGH OVERNIGHT. FOR NEXT 24 HOURS...MOST LOCATIONS TO
RECEIVE ADDITIONAL 2 TO LOCALLY 5+ INCHES OF SNOW WITH HEAVIEST
SWATCH IN BANDS +/- 50 MILES EITHER SIDE OF OTM TO RFD LINE.
..NICHOLS..

.LONG TERM...WEDNESDAY THROUGH NEXT MONDAY...
OPERATIONAL MODELS NOT AS IMPRESSIVE WITH SYSTEM ON WEDNESDAY AS
PREVIOUSLY INDICATED. MAY END UP BEING A ADVISORY SITUATION RATHER
THAN WARNING BUT FOR NOW WILL CONTINUE WITH WATCH AND LET DAY CREW
EVALUATE MORNING MODEL DATA. ECMWF MODEL DOESN/T INTENSIFY THE
SURFACE LOW ON WEDNESDAY UNTIL IT GETS INTO THE GREAT LAKES REGION
AND KEEPS HIGHER QPF TO THE EAST OF THE DVN CWA. ON THE OTHER HAND
THE GFS BEGINS TO DEEPEN THE LOW JUST EAST OF CHICAGO BUT MOVES IT
QUICKLY OFF TO THE NORTHEAST LEAVING THE DVN CWA WITH ONLY ABOUT A
6 HOUR PERIOD OF ACCUMULATING SNOW. THIS SCENARIO SUGGESTS SNOWFALL
AMOUNTS OF ONLY 2 TO 4 INCHES ON WEDNESDAY ACROSS THE CWA. THE WIND
SHOULD CRANK UP TO SOME GUSTS TO NEAR 30 MPH LATER WEDNESDAY
AFTERNOON AND INTO THE EVENING BUT QUICKLY DIES DOWN AS HIGH
PRESSURE BUILDS IN FROM THE WEST. MAY HAVE SOME AREAS OF BLOWING
SNOW FOR A TIME BUT AT THIS POINT DOESN/T APPEAR TO BE A MAJOR
ISSUE. WITH ALL THIS UNCERTAINTY WILL JUST KEEP THE WINTER STORM
WATCH AS IS FOR NOW AND AWAIT THE MORNING DATA.

CHRISTMAS STILL LOOKS QUIET AS HIGH PRESSURE STARTS OUT IN THE
REGION BUT QUICKLY SHIFTS EAST. DEEP TROUGH WILL BE MOVING INTO THE
ROCKIES WITH RAPID RETURN OF THE STRONG SOUTHERLY LOW LEVEL JET AND
EXCELLENT FEED OFF THE GULF. STRONG WARM AIR ADVECTION INDICATED BY
OPERATIONAL MODELS AND RAPID MOISTENING OF THE COLUMN. 850 MB
TEMPERATURE STARTS OUT BELOW FREEZING EARLY THURSDAY NIGHT BUT BY
12Z FRIDAY THE 850 MB TEMPERATURE RISES TO 6-8C ACROSS THE SOUTH
HALF OF THE CWA. LATER IN THE DAY ON FRIDAY ECMWF/GFS AGREE THAT THE
850 MB TEMP CONTINUES RISING TO AT LEAST 10C. THIS SCENARIO SUGGESTS
A MESSY MIX OF FREEZING RAIN...SNOW AND SLEET THURSDAY NIGHT
BECOMING ALL RAIN ON FRIDAY AS SURFACE TEMPERATURES CONTINUE RISING
DUE TO STRONG SOUTHERLY FLOW. THE RAIN MAY BECOME MORE SCATTERED ON
FRIDAY AS THE WARM ADVECTION PRECIPITATION SHIFTS NORTHWARD AND COLD
FRONT IS STILL WELL TO THE WEST. HAVE BUMPED MAXIMUM TEMPS INTO THE
40S FROM ABOUT I-80 SOUTHWARD AND 30S TO THE NORTH. 00Z ECMWF HAS
NOW SLOWED DOWN CONSIDERABLY THE COLD FRONT FROM PREVIOUS RUN AS THE
LONG WAVE TROUGH IN THE PLAINS DEEPENS. IF THIS PANS OUT SIGNIFICANT
RAINS WOULD OCCUR FRIDAY NIGHT AND SATURDAY BEFORE CHANGING TO SNOW
AT THE TAIL END OF EVENT SATURDAY NIGHT AS COLD FRONT FINALLY MOVES
EAST. CANT RULE OUT SOME THUNDERSTORMS AS COLD FRONT MOVES ACROSS
THE REGION. THE SNOWMELT/ICE JAMS ON RIVERS...COMBINED WITH
SIGNIFICANT RAINS COULD CAUSE HYDRO PROBLEMS. LATER SHIFTS WILL NEED
TO MONITOR MODEL TRENDS ON THIS POTENTIALLY SIGNIFICANT EVENT.
SOMEWHAT COLDER AIR TO FOLLOW BEHIND THE FRONT BUT CERTAINLY NOT
ARCTIC AIR. THIS IS BECAUSE ZONAL FLOW ALOFT DOMINATES EARLY NEXT
WEEK GIVING OUR REGION A QUIET PERIOD FOR A FEW DAYS AND NORMAL
TEMPERATURES...SOMETHING WE HAVEN/T SEEN MUCH OF THIS MONTH.
..HAASE..

&&

.AVIATION...VFR AND INTERMITTENT MVFR CONDITIONS WITH OVERCAST CIGS
OF 3-6K AGL AND VSBYS AOA 5 MILES TO SLOWLY LOWER BETWEEN 10Z AND 16Z
TO MVFR TO IFR IN AREAS OF LIGHT SNOW WITH OVC CIGS 1-3K AGL AND
VSBYS 1-3 MILES WITH BRIEF VSBYS AOB 1 MILE IN HEAVIER SNOW.
CONDITIONS TO LOWER TO IFR AND LIFR BETWEEN 00 AND 06Z TONIGHT WITH
CIGS AOB 1K AGL AND VSBYS 2 MILES OR LESS WITH INTERMITTENT 1/2 MILE
IN SNOW ALL TERMINALS INTO WEDNESDAY.   ..NICHOLS..

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...WINTER WEATHER ADVISORY TO 6 PM CST TUESDAY FOR BENTON-
     BUCHANAN-CEDAR-CLINTON-DELAWARE-DES MOINES-DUBUQUE-HENRY IA-
     IOWA-JACKSON-JEFFERSON-JOHNSON-JONES-KEOKUK-LEE-LINN-LOUISA-
     MUSCATINE-SCOTT-VAN BUREN-WASHINGTON.

     WINTER STORM WATCH FROM TUESDAY EVENING THROUGH WEDNESDAY
     AFTERNOON FOR BENTON-BUCHANAN-CEDAR-CLINTON-DELAWARE-DES
     MOINES-DUBUQUE-HENRY IA-IOWA-JACKSON-JEFFERSON-JOHNSON-
     JONES-KEOKUK-LEE-LINN-LOUISA-MUSCATINE-SCOTT-VAN BUREN-
     WASHINGTON.

IL...WINTER WEATHER ADVISORY TO 6 PM CST TUESDAY FOR BUREAU-
     CARROLL-HANCOCK-HENDERSON-HENRY IL-JO DAVIESS-MCDONOUGH-
     MERCER-PUTNAM-ROCK ISLAND-STEPHENSON-WARREN-WHITESIDE.

     WINTER STORM WATCH FROM TUESDAY EVENING THROUGH WEDNESDAY
     AFTERNOON FOR BUREAU-CARROLL-HANCOCK-HENDERSON-HENRY IL-JO
     DAVIESS-MCDONOUGH-MERCER-PUTNAM-ROCK ISLAND-STEPHENSON-
     WARREN-WHITESIDE.

MO...WINTER WEATHER ADVISORY TO 6 PM CST TUESDAY FOR CLARK-SCOTLAND.

     WINTER STORM WATCH FROM TUESDAY EVENING THROUGH WEDNESDAY
     AFTERNOON FOR CLARK-SCOTLAND.

&&

NICHOLS/HAASE
Hazardous weather outlook, Dec 23, 4:40 AM CST, 6 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
440 AM CST TUE DEC 23 2008

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-232300-
BENTON IA-BUCHANAN IA-BUREAU IL-CARROLL IL-CEDAR IA-CLARK MO-CLINTON
IA-DELAWARE IA-DES MOINES IA-DUBUQUE IA-HANCOCK IL-HENDERSON IL-HENRY
IA-HENRY IL-IOWA IA-JACKSON IA-JEFFERSON IA-JO DAVIESS IL-JOHNSON IA-
JONES IA-KEOKUK IA-LEE IA-LINN IA-LOUISA IA-MCDONOUGH IL-MERCER IL-
MUSCATINE IA-PUTNAM IL-ROCK ISLAND IL-SCOTLAND MO-SCOTT IA-
STEPHENSON IL-VAN BUREN IA-WARREN IL-WASHINGTON IA-WHITESIDE IL-
440 AM CST TUE DEC 23 2008

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

TODAY...A SERIES OF UPPER LEVEL DISTURBANCES WILL CONTINUE TO PRODUCE
EPISODES OF SNOW.  THE SNOW MAY BE MIXED WITH SLEET SOUTHEAST OF A
MONMOUTH TO KEOSAUQUA LINE IN THE AFTERNOON.  ADDITIONAL LIGHT TO
MODERATE ACCUMULATIONS OF SNOW AND ICE IS EXPECTED OF 1 TO 4 INCHES
FROM OVERNIGHT TOTALS OF AN INCH OR MORE. GUSTY SE WINDS OF 15 TO 25
MPH WILL ALLOW FOR SOME DRIFTING AND BLOWING OF THE SNOW.  THUS...A
WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM.

TONIGHT...A STORM SYSTEM WILL MOVE ACROSS THE FORECAST AREA PRODUCING
MORE SNOW AND POSSIBLY SOME SLEET SOUTHEAST OF A PRINCETON TO
BURLINGTON TO MEMPHIS LINE.  THIS STORM HAS THE POTENTIAL FOR
PRODUCING 1 TO 4 MORE ADDITIONAL INCHES OF SNOW BY WEDNESDAY MORNING.
ADDITIONAL SNOW IS EXPECTED TO CONTINUE INTO WEDNESDAY AFTERNOON...
HENCE A WINTER STORM WATCH REMAINS IN EFFECT FROM 6 PM CDT TONIGHT
THROUGH 3 PM WEDNESDAY AFTERNOON.

PLEASE SEE LOCAL OFFICE WINTER WEATHER PRODUCTS FOR FURTHER
INFORMATION ON THIS SYSTEM.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

LOW PRESSURE WILL TRACK RAPIDLY FROM EASTERN MISSOURI TO THE EASTERN
GREAT LAKES ON WEDNESDAY. ADDITIONAL SNOW ACCUMULATIONS OF ABOUT
2 TO 5 INCHES CAN BE EXPECTED ESPECIALLY ACROSS EASTERN IOWA AND
NORTHWEST ILLINOIS...OR FROM ABOUT THE IOWA CITY AND QUAD CITIES AREA
TO THE DUBUQUE AND FREEPORT AREAS. THE SNOW SHOULD DIMINISH LATER IN
THE AFTERNOON AND THERE MAY BE A PERIOD OF BLOWING SNOW AS WIND GUSTS
APPROACH 30 MPH FOR A TIME.

A STRONG STORM SYSTEM WILL IMPACT THE REGION BEGINNING THURSDAY NIGHT
AND LASTING INTO SATURDAY. A MESSY MIX OF FREEZING RAIN...SNOW AND
SLEET WILL ARRIVE THURSDAY NIGHT. HOWEVER...STRONG SOUTHERLY WINDS
PUSHING TEMPERATURES INTO THE 30S AND 40S ON FRIDAY WILL CHANGE THE
MIX TO ALL RAIN. A SLOW MOVING FRONTAL BOUNDARY MAY PRODUCE
SIGNIFICANT RAINFALL FRIDAY NIGHT AND SATURDAY AS SOUTHERLY LOW LEVEL
WINDS FEED GULF MOISTURE INTO THE REGION. ISOLATED THUNDERSTORMS ARE
ALSO POSSIBLE. THE RAIN SHOULD CHANGE TO A PERIOD OF FREEZING RAIN
AND SNOW LATER SATURDAY INTO SATURDAY NIGHT AS A COLD FRONT PUSHES
ACROSS THE REGION. THIS IS POTENTIALLY A SIGNIFICANT EVENT BUT IT IS
TOO EARLY TO DETERMINE ACTUAL PRECIPITATION AMOUNTS AND ANY IMPACTS
ON AREA RIVERS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.  HOWEVER...
SNOWFALL REPORTS AND ROAD CONDITIONS WILL BE APPRECIATED TODAY
THROUGH WEDNESDAY.

HAASE/NICHOLS

In the hours before

Local storm report, Dec 23, 10:28 AM CST, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1028 AM CST TUE DEC 23 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1025 AM     SNOW             1 SSW BELLE PLAINE      41.89N 92.28W
12/23/2008  E1.0 INCH        BENTON             IA   TRAINED SPOTTER

            SO FAR.

&&
Local storm report, Dec 23, 10:54 AM CST, 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1054 AM CST TUE DEC 23 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1053 AM     SNOW             W CANTRIL               40.64N 92.07W
12/23/2008  M1.0 INCH        VAN BUREN          IA   TRAINED SPOTTER

            NO PRECIPITATION AT THIS TIME.

&&

WE
Local storm report, Dec 23, 10:56 AM CST, 39 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1056 AM CST TUE DEC 23 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0545 AM     SNOW             1 E ELMIRA              41.72N 91.40W
12/23/2008  M1.0 INCH        JOHNSON            IA   TRAINED SPOTTER

0616 AM     SNOW             3 NNW CEDAR RAPIDS      42.02N 91.70W
12/23/2008  M0.8 INCH        LINN               IA   TRAINED SPOTTER

0617 AM     SNOW             BERTRAM                 41.95N 91.54W
12/23/2008  M1.5 INCH        LINN               IA   TRAINED SPOTTER

            STILL LIGHT SNOW FALLING.

0620 AM     SNOW             FREEPORT                42.29N 89.63W
12/23/2008  E1.5 INCH        STEPHENSON         IL   TRAINED SPOTTER

            SO FAR.

0707 AM     SNOW             VINTON                  42.16N 92.03W
12/23/2008  M1.9 INCH        BENTON             IA   TRAINED SPOTTER

            SNOW DEPTH IS 10.0.

0753 AM     SNOW             E SOLON                 41.80N 91.49W
12/23/2008  M1.5 INCH        JOHNSON            IA   TRAINED SPOTTER

            NOT SNOWING AT THIS TIME. SNOW DEPTH OF 5.5 INCHES.

0756 AM     SNOW             SOUTH AMANA             41.78N 91.97W
12/23/2008  M1.0 INCH        IOWA               IA   TRAINED SPOTTER

0803 AM     SNOW             1 SE PRINCETON          41.37N 89.45W
12/23/2008  M0.5 INCH        BUREAU             IL   TRAINED SPOTTER

            STILL VERY LIGHT SNOW FALLING.

0829 AM     SNOW             1 WSW IOWA CITY         41.65N 91.55W
12/23/2008  M1.0 INCH        JOHNSON            IA   TRAINED SPOTTER

            NOT SNOWING AT THIS TIME. 3 INCH SNOW DEPTH.

0900 AM     SNOW             STANWOOD                41.89N 91.15W
12/23/2008  M0.3 INCH        CEDAR              IA   TRAINED SPOTTER

0900 AM     SNOW             NNW SPRINGVILLE         42.06N 91.45W
12/23/2008  M0.4 INCH        LINN               IA   TRAINED SPOTTER

            NOT SNOWING AT THIS TIME. 4.0 SNOW DEPTH.

0910 AM     SNOW             1 SW NORTH LIBERTY      41.73N 91.62W
12/23/2008  E1.3 INCH        JOHNSON            IA   TRAINED SPOTTER

            SNOWFALL OVERNIGHT WAS 1 1/4 INCHES.

1025 AM     SNOW             1 SSW BELLE PLAINE      41.89N 92.28W
12/23/2008  E1.0 INCH        BENTON             IA   TRAINED SPOTTER

            SO FAR.

1053 AM     SNOW             W CANTRIL               40.64N 92.07W
12/23/2008  M1.0 INCH        VAN BUREN          IA   TRAINED SPOTTER

            NO PRECIPITATION AT THIS TIME.

&&

WE
Local storm report, Dec 23, 11:00 AM CST, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1100 AM CST TUE DEC 23 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1056 AM     SNOW             2 N NEW WINDSOR         41.23N 90.45W
12/23/2008  M0.2 INCH        MERCER             IL   TRAINED SPOTTER

            SNOW DEPTH OF 4.0.

&&

WE
Local storm report, Dec 23, 11:02 AM CST, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1102 AM CST TUE DEC 23 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1059 AM     SNOW             1 S MARENGO             41.78N 92.07W
12/23/2008  M1.0 INCH        IOWA               IA   TRAINED SPOTTER

            NOT SNOWING NOW. LOTS OF DRIFTING AND BLOWING.

&&

WE
Local storm report, Dec 23, 11:03 AM CST, 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1103 AM CST TUE DEC 23 2008

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1102 AM     SNOW             FREEPORT                42.29N 89.63W
12/23/2008  M2.0 INCH        STEPHENSON         IL   TRAINED SPOTTER

&&

WE

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 23, 11:35 AM CSTWinter Weather AdvisoryDVNBenton, Buchanan, Cedar, Delaware, Dubuque, Iowa and 6 more24 hr

Nearby

Winter Storm Warnings in Illinois, 2008Winter Storm Warnings in Iowa, 2008Every winter storm warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.