Alert archive / Iowa / Winter Storm Warnings in 2009

Winter Storm Warning 2, NWS Quad Cities, IA

February 20, 20096 counties in Iowa; 4 counties in Illinois

NWS Quad Cities, IA issued this winter storm warning at Feb 20, 2009, 4:17 AM CST for 6 counties in Iowa; 4 counties in Illinois. It took effect at Feb 20, 2009, 6:00 PM CST. It was in force for 21 hr. 24 reports 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
Feb 20, 2009, 4:17 AM CST (10:17 UTC)
In effect from
Feb 20, 2009, 6:00 PM CST
Expired
Feb 21, 2009, 3:00 PM CST
In force
21 hr
Issued by
NWS Quad Cities, IA

Counties Buchanan County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Jackson County, IA, Jones County, IA, Carroll County, IL, Jo Daviess County, IL, Stephenson County, IL, Whiteside County, IL

The radar

The Quad Cities radar (KDVN), 67 km from the middle of the area, began a volume at 10:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Feb 20, 10:18 PM CSTSNOW 1Stanley, IA
Feb 21, 12:00 AM CSTSNOW 1Dubuque, IA
Feb 21, 5:08 AM CSTSNOW 2Scotch Grove, IACOURTESY KCRG
Feb 21, 5:40 AM CSTSNOW 2Maquoketa, IACOURTESY KCRG
Feb 21, 6:01 AM CSTSNOW 2.5Olin, IACOURTESY KCRG
Feb 21, 6:20 AM CSTSNOW 2.4Dubuque Regional Airpor, IAOFFICIAL SNOWFALL FOR DUBUQUE THROUGH 6 AM CST. STILL SNOWING AT TIME OF REPORT.
Feb 21, 6:20 AM CSTSNOW 2.72 W Dubuque, IASTILL SNOWING.
Feb 21, 6:20 AM CSTSNOW 4Edgewood, IASTILL LIGHT SNOW FALLING AT TIME OF REPORT. PLENTY OF DRIFTING SNOW ALSO REPORTED.
Feb 21, 6:30 AM CSTSNOW 3Freeport, ILSTILL SNOWING AT TIME OF REPORT.
Feb 21, 6:54 AM CSTSNOW 2.34 W Maquoketa, IACONSIDERABLE DRIFTING SNOW.
Feb 21, 6:56 AM CSTSNOW 46 Wnw Rock Falls, IL
Feb 21, 7:26 AM CSTSNOW 3Dubuque, IASTILL SNOWING.
Feb 21, 7:32 AM CSTSNOW 2.13 Ssw Center Junction, IA
Feb 21, 7:46 AM CSTSNOW 31 N Freeport, ILSTILL SNOWING AT TIME OF REPORT.
Feb 21, 8:21 AM CSTSNOW 2.2Anamosa, IA
Feb 21, 8:34 AM CSTSNOW 2.8Dewitt, IASNOWING LIGHTLY.
Feb 21, 8:34 AM CSTSNOW 3.14 S Dewitt, IASNOWING LIGHTLY.
Feb 21, 8:38 AM CSTSNOW 3.32 W Dubuque, IA
Feb 21, 8:49 AM CSTSNOW 2.3Wyoming, IA
Feb 21, 9:14 AM CSTSNOW 2.44 Nnw Lanark, IL
Feb 21, 9:18 AM CSTSNOW 3Holy Cross, IARECEIVED THROUGH KCRG.
Feb 21, 10:23 AM CSTSNOW 3.3Freeport, IL
Feb 21, 1:22 PM CSTSNOW 5.5Freeport, ILLIGHT SNOW CONTINUES.
Feb 21, 2:00 PM CSTSNOW 3.5Hanover, ILSTILL SNOWING.

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 00:00Z, 10.3 hours before the alert went out and 67 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 00:00Z on 2009-02-20Temperature 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 00:00Z on 2009-02-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.1939587897Sfc1 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
1393 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
94 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 201017
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
417 AM CST FRI FEB 20 2009

...ACCUMULATING SNOW TONIGHT INTO SATURDAY MORNING...

.A STRONG WINTER STORM MOVING OUT OF WESTERN CANADA WILL BRING
ACCUMULATING SNOWFALL TO THE AREA TONIGHT AND EARLY SATURDAY. 
STORM TOTAL ACCUMULATIONS OF 5 TO 7 INCHES WILL OCCUR OVER
NORTHEAST IOWA AND NORTHWEST ILLINOIS. 2 TO 5 INCHES WILL OCCUR
FURTHER TO THE SOUTH ALONG THE INTERSTATE 80 CORRIDOR.
CONSIDERABLE BLOWING AND DRIFTING SNOW IS EXPECTED TO OCCUR LATE
FRIDAY NIGHT AND ESPECIALLY ON SATURDAY AS STRONG NORTHWEST WINDS
DEVELOP BEHIND THE DEPARTING STORM.

IAZ042-053-054-066-ILZ001-002-007-009-201830-
/O.UPG.KDVN.WS.A.0002.090221T0000Z-090221T1800Z/
/O.NEW.KDVN.WS.W.0002.090221T0000Z-090221T1800Z/
DUBUQUE-JONES-JACKSON-CLINTON-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-
INCLUDING THE CITIES OF...DUBUQUE...ANAMOSA...MAQUOKETA...
CLINTON...GALENA...FREEPORT...MOUNT CARROLL...STERLING...
ROCK FALLS
417 AM CST FRI FEB 20 2009

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 12 PM
CST SATURDAY...

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 12 PM CST SATURDAY. THE WINTER STORM WATCH IS NO LONGER
IN EFFECT.

WIDESPREAD SNOWFALL AMOUNTS OF 5 TO 7 INCHES ARE EXPECTED FROM
FRIDAY MID EVENING THROUGH MIDDAY SATURDAY. THE SNOW COULD BE
HEAVY AT TIMES ACCUMULATING AT A RATE OF 1 TO 2 INCHES AN HOUR FOR
A FEW HOURS. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS ALSO
EXPECTED FROM LATE FRIDAY NIGHT THROUGH SATURDAY AS NORTHWEST
WINDS STRENGTHEN TO 20 TO 30 MPH.

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...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE YOUR WINTER
SURVIVAL KIT.

$$

IAZ041-201830-
/O.NEW.KDVN.WS.W.0002.090221T0000Z-090221T1800Z/
DELAWARE-
INCLUDING THE CITY OF...MANCHESTER
417 AM CST FRI FEB 20 2009

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 12 PM
CST SATURDAY...

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 12 PM CST SATURDAY.

WIDESPREAD SNOWFALL AMOUNTS OF 5 TO 7 INCHES ARE EXPECTED FROM
FRIDAY EVENING THROUGH MIDDAY SATURDAY. THE SNOW COULD BE HEAVY
AT TIMES ACCUMULATING AT A RATE OF 1 TO 2 INCHES AN HOUR FOR A FEW
HOURS. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS ALSO
EXPECTED FROM LATE FRIDAY NIGHT THROUGH SATURDAY AS NORTHWEST
WINDS STRENGTHEN TO 20 TO 30 MPH.

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...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE YOUR WINTER
SURVIVAL KIT.


$$

IAZ065-067-068-ILZ015>018-201830-
/O.UPG.KDVN.WS.A.0002.090221T0000Z-090221T1800Z/
/O.NEW.KDVN.WW.Y.0007.090221T0000Z-090221T1800Z/
CEDAR-MUSCATINE-SCOTT-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-
INCLUDING THE CITIES OF...TIPTON...MUSCATINE...BETTENDORF...
DAVENPORT...MOLINE...ROCK ISLAND...KEWANEE...PRINCETON...HENNEPIN
417 AM CST FRI FEB 20 2009

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

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

WIDESPREAD SNOWFALL AMOUNTS OF 3 TO 5 INCHES ARE EXPECTED FROM
FRIDAY MID EVENING THROUGH MIDDAY SATURDAY. A FEW LOCALLY HIGHER 
AMOUNTS WILL BE POSSIBLE NORTH OF INTERSTATE 80... WHERE THE SNOW
COULD BE HEAVY AT TIMES ACCUMULATING AT A RATE OF 1 TO 2 INCHES AN
HOUR FOR A FEW HOURS. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW
IS ALSO EXPECTED FROM LATE FRIDAY NIGHT THROUGH SATURDAY AS
NORTHWEST WINDS STRENGTHEN TO 20 TO 30 MPH.

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.

$$

IAZ040-051-052-063-064-077-078-ILZ024-201830-
/O.NEW.KDVN.WW.Y.0007.090221T0000Z-090221T1800Z/
BUCHANAN-BENTON-LINN-IOWA-JOHNSON-WASHINGTON-LOUISA-MERCER-
INCLUDING THE CITIES OF...INDEPENDENCE...VINTON...CEDAR RAPIDS...
MARENGO...IOWA CITY...WASHINGTON...WAPELLO...ALEDO
417 AM CST FRI FEB 20 2009

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

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 PM THIS
EVENING TO 12 PM CST SATURDAY.

WIDESPREAD SNOWFALL AMOUNTS OF 3 TO 5 INCHES ARE EXPECTED FROM
FRIDAY MID EVENING THROUGH MIDDAY SATURDAY. A FEW LOCALLY HIGHER 
AMOUNTS WILL BE POSSIBLE NORTH OF INTERSTATE 80...WHERE THE SNOW
COULD BE HEAVY AT TIMES ACCUMULATING AT A RATE OF 1 TO 2 INCHES AN
HOUR FOR A FEW HOURS. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW
IS ALSO EXPECTED FROM LATE FRIDAY NIGHT THROUGH SATURDAY AS
NORTHWEST WINDS STRENGTHEN TO 20 TO 30 MPH.

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.


$$

12/LE
9 follow-up statements
000 
WWUS43 KDVN 201606
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1006 AM CST FRI FEB 20 2009

...SNOW TONIGHT INTO SATURDAY MORNING...

.A STRONG WINTER STORM MOVING OUT OF THE NORTHERN PLAINS WILL
BRING ACCUMULATING SNOWFALL TO THE AREA TONIGHT AND EARLY
SATURDAY. STORM TOTAL ACCUMULATIONS OF 5 TO 7 INCHES WILL OCCUR
OVER NORTHEAST IOWA AND NORTHWEST ILLINOIS. 2 TO 5 INCHES WILL
OCCUR FURTHER TO THE SOUTH ALONG THE INTERSTATE 80 CORRIDOR.
CONSIDERABLE BLOWING AND DRIFTING SNOW IS EXPECTED TO OCCUR LATE
FRIDAY NIGHT AND ESPECIALLY ON SATURDAY AS STRONG NORTHWEST WINDS
DEVELOP BEHIND THE DEPARTING STORM.

IAZ041-042-053-054-066-ILZ001-002-007-009-210015-
/O.CON.KDVN.WS.W.0002.090221T0000Z-090221T1800Z/
DELAWARE-DUBUQUE-JONES-JACKSON-CLINTON-JO DAVIESS-STEPHENSON-
CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...MANCHESTER...DUBUQUE...ANAMOSA...
MAQUOKETA...CLINTON...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS
1006 AM CST FRI FEB 20 2009

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 12 PM CST SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING
TO 12 PM CST SATURDAY. 

WIDESPREAD SNOWFALL AMOUNTS OF 5 TO 7 INCHES ARE EXPECTED FROM
MID EVENING THROUGH MIDDAY SATURDAY. THE SNOW COULD BE HEAVY AT
TIMES...ACCUMULATING AT A RATE OF 1 TO 2 INCHES AN HOUR FOR A FEW
HOURS. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS ALSO
EXPECTED FROM LATE TONIGHT THROUGH SATURDAY AS NORTHWEST WINDS
STRENGTHEN TO 20 TO 30 MPH.

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. TRAVEL IN AN EMERGENCY AND TAKE YOUR WINTER SURVIVAL
KIT.

$$

IAZ040-051-052-063>065-067-068-077-078-ILZ015>018-024-210015-
/O.CON.KDVN.WW.Y.0007.090221T0000Z-090221T1800Z/
BUCHANAN-BENTON-LINN-IOWA-JOHNSON-CEDAR-MUSCATINE-SCOTT-
WASHINGTON-LOUISA-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-
INCLUDING THE CITIES OF...INDEPENDENCE...VINTON...CEDAR RAPIDS...
MARENGO...IOWA CITY...TIPTON...MUSCATINE...BETTENDORF...
DAVENPORT...WASHINGTON...WAPELLO...MOLINE...ROCK ISLAND...
KEWANEE...PRINCETON...HENNEPIN...ALEDO
1006 AM CST FRI FEB 20 2009

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

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 PM THIS
EVENING TO 12 PM CST SATURDAY. 

WIDESPREAD SNOWFALL AMOUNTS OF 3 TO 5 INCHES ARE EXPECTED FROM
MID EVENING THROUGH MIDDAY SATURDAY. A FEW LOCALLY HIGHER AMOUNTS
WILL BE POSSIBLE NORTH OF INTERSTATE 80...WHERE THE SNOW COULD BE
HEAVY AT TIMES ACCUMULATING AT A RATE OF 1 TO 2 INCHES AN HOUR FOR
A FEW HOURS. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS ALSO
EXPECTED FROM LATE TONIGHT THROUGH SATURDAY AS NORTHWEST WINDS
STRENGTHEN TO 20 TO 30 MPH.

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.

$$

DLS
000 
WWUS43 KDVN 202131
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
331 PM CST FRI FEB 20 2009

...SNOW DEVELOPING TONIGHT AND CONTINUING INTO SATURDAY MORNING...

.A STRONG WINTER STORM DEVELOPING OVER THE CENTRAL PLAINS WILL
TRACK NORTHEAST THROUGH MISSOURI AND ILLINOIS TONIGHT AND SATURDAY
SPREADING MODERATE TO HEAVY SNOW ACROSS PORTIONS OF IOWA AND
ILLINOIS. STORM TOTAL ACCUMULATIONS OF 6 TO 8 INCHES ARE
EXPECTED FROM EAST CENTRAL IOWA INTO NORTHWEST ILLINOIS. IN
ADDITION...STRONG WINDS WILL DEVELOP AS THE STORM PASSES TO THE
EAST...RESULTING IN WIDESPREAD BLOWING AND DRIFTING SNOW LATE
TONIGHT AND SATURDAY.

IAZ040-210545-
/O.UPG.KDVN.WW.Y.0007.090221T0000Z-090221T1800Z/
/O.EXA.KDVN.WS.W.0002.090221T0000Z-090221T1800Z/
BUCHANAN-
INCLUDING THE CITY OF...INDEPENDENCE
331 PM CST FRI FEB 20 2009

...WINTER STORM WARNING IN EFFECT UNTIL 12 PM CST SATURDAY...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
STORM WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
UNTIL 12 PM CST SATURDAY. THE WINTER WEATHER ADVISORY IS NO LONGER
IN EFFECT.

SNOW WILL OVERSPREAD THE AREA THIS EVENING WITH WIDESPREAD
SNOWFALL AMOUNTS OF 6 TO 7 INCHES LIKELY BY THE TIME THE SNOW ENDS
SATURDAY MORNING. SNOW COULD BE HEAVY AT TIMES LATE THIS
EVENING...ACCUMULATING AT A RATE OF 1 TO 2 INCHES PER HOUR. 
NORTHWEST WINDS FROM 20 TO 30 MPH WILL DEVELOP LATE TONIGHT AND
CONTINUE THROUGH SATURDAY MORNING CAUSING CONSIDERABLE DRIFTING
AND BLOWING SNOW. 

A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW MEANS THAT
HEAVY SNOW IS LIKELY ALONG WITH CONSIDERABLE BLOWING SNOW THAT
WILL HAMPER VISIBILITIES. THIS WILL RESULT IN DANGEROUS TRAVEL
CONDITIONS. IF YOU MUST TRAVEL...CARRY A WINTER SURVIVAL KIT IN
YOUR VEHICLE. 


$$

IAZ041-042-053-054-066-ILZ001-002-007-009-210545-
/O.CON.KDVN.WS.W.0002.090221T0000Z-090221T1800Z/
DELAWARE-DUBUQUE-JONES-JACKSON-CLINTON-JO DAVIESS-STEPHENSON-
CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...MANCHESTER...DUBUQUE...ANAMOSA...
MAQUOKETA...CLINTON...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS
331 PM CST FRI FEB 20 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST
SATURDAY. 

WIDESPREAD SNOWFALL AMOUNTS OF 6 TO 8 INCHES ARE EXPECTED FROM
MID EVENING THROUGH MIDDAY SATURDAY. THE SNOW COULD BE HEAVY AT
TIMES...ACCUMULATING AT A RATE OF 1 TO 2 INCHES AN HOUR FOR A FEW
HOURS. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS ALSO
EXPECTED FROM LATE TONIGHT THROUGH SATURDAY AS NORTHWEST WINDS
STRENGTHEN TO 20 TO 30 MPH.

A WINTER STORM WARNING FOR HEAVY SNOW MEANS 6 TO 8 INCHES OR MORE
OF SNOW IS EXPECTED OR OCCURRING. THIS WILL MAKE TRAVEL VERY
DANGEROUS. TRAVEL IN AN EMERGENCY AND TAKE YOUR WINTER SURVIVAL
KIT.

$$

IAZ051-052-063>065-067-068-077-078-ILZ015>018-024-210545-
/O.CON.KDVN.WW.Y.0007.090221T0000Z-090221T1800Z/
BENTON-LINN-IOWA-JOHNSON-CEDAR-MUSCATINE-SCOTT-WASHINGTON-LOUISA-
ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-
INCLUDING THE CITIES OF...VINTON...CEDAR RAPIDS...MARENGO...
IOWA CITY...TIPTON...MUSCATINE...BETTENDORF...DAVENPORT...
WASHINGTON...WAPELLO...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO
331 PM CST FRI FEB 20 2009

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

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

WIDESPREAD SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED FROM
MID EVENING THROUGH MIDDAY SATURDAY. THE HEAVIEST AMOUNTS WILL BE
NORTH OF INTERSTATE 80...WHERE SNOW MAY FALL AT 1 TO 2 INCHES
PER HOUR FOR A SHORT TIME LATE THIS EVENING. CONSIDERABLE
DRIFTING AND SOME BLOWING SNOW IS ALSO EXPECTED FROM LATE TONIGHT
THROUGH SATURDAY AS NORTHWEST WINDS STRENGTHEN TO 20 TO 30 MPH.

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.

$$

DLS
000 
WWUS43 KDVN 210301
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
901 PM CST FRI FEB 20 2009

...SNOW TONIGHT AND CONTINUING INTO SATURDAY MORNING...

.A STRONG WINTER STORM DEVELOPING OVER THE CENTRAL PLAINS WILL
TRACK NORTHEAST THROUGH MISSOURI AND ILLINOIS TONIGHT AND
SATURDAY SPREADING MODERATE TO HEAVY SNOW ACROSS PORTIONS 
OF IOWA AND ILLINOIS. STORM TOTAL ACCUMULATIONS OF 4 TO 7 INCHES
ARE EXPECTED OVER PORTIONS OF NORTHEAST IOWA INTO NORTHWEST
ILLINOIS...WITH AMOUNTS TAPERING OFF TO THE SOUTH. IN ADDITION...
STRONG WINDS WILL DEVELOP AS THE STORM PASSES TO THE
EAST...RESULTING IN WIDESPREAD BLOWING AND DRIFTING SNOW LATE
TONIGHT AND SATURDAY.

IAZ040>042-053-054-066-ILZ001-002-007-009-211115-
/O.CON.KDVN.WS.W.0002.000000T0000Z-090221T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-JONES-JACKSON-CLINTON-JO DAVIESS-
STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
ANAMOSA...MAQUOKETA...CLINTON...GALENA...FREEPORT...
MOUNT CARROLL...STERLING...ROCK FALLS
901 PM CST FRI FEB 20 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST
SATURDAY. 

STORM TOTAL SNOWFALL AMOUNTS OF 4 TO 7 INCHES IS EXPECTED OVER
THE AREA BY MIDDAY SATURDAY. THE SNOW COULD BE HEAVY AT
TIMES TONIGHT...ACCUMULATING AT A RATE OF AN INCH AN HOUR 
FOR A FEW HOURS. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS
ALSO EXPECTED FROM LATE TONIGHT THROUGH SATURDAY AS NORTHWEST
WINDS STRENGTHEN TO 20 TO 30 MPH.

A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW MEANS THAT
HEAVY SNOW IS LIKELY ALONG WITH CONSIDERABLE BLOWING SNOW THAT
WILL HAMPER VISIBILITIES. THIS WILL RESULT IN DANGEROUS TRAVEL
CONDITIONS. IF YOU MUST TRAVEL...CARRY A WINTER SURVIVAL KIT IN
YOUR VEHICLE.

$$

IAZ051-052-063>065-067-068-077-078-ILZ015>018-024-211115-
/O.CON.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
BENTON-LINN-IOWA-JOHNSON-CEDAR-MUSCATINE-SCOTT-WASHINGTON-LOUISA-
ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-
INCLUDING THE CITIES OF...VINTON...CEDAR RAPIDS...MARENGO...
IOWA CITY...TIPTON...MUSCATINE...BETTENDORF...DAVENPORT...
WASHINGTON...WAPELLO...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO
901 PM CST FRI FEB 20 2009

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

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

STORM TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES ARE EXPECTED BY
MIDDAY SATURDAY...WITH THE HEAVIEST AMOUNTS MAINLY NORTH OF
INTERSTATE 80. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS
ALSO EXPECTED FROM LATE TONIGHT THROUGH SATURDAY AS NORTHWEST
WINDS STRENGTHEN TO 20 TO 30 MPH.

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.

$$
000 
WWUS43 KDVN 210416
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1016 PM CST FRI FEB 20 2009

...SNOW TONIGHT AND CONTINUING INTO SATURDAY MORNING...

.A STRONG WINTER STORM DEVELOPING OVER THE CENTRAL PLAINS WILL
TRACK NORTHEAST THROUGH MISSOURI AND ILLINOIS TONIGHT AND
SATURDAY SPREADING MODERATE TO LOCALLY HEAVY SNOW ACROSS PORTIONS
OF IOWA AND ILLINOIS. THE HEAVIEST ACCUMULATIONS OF 3 TO 6 INCHES
ARE EXPECTED OVER PORTIONS OF NORTHEAST IOWA INTO NORTHWEST
ILLINOIS...WITH AMOUNTS TAPERING OFF TO THE SOUTH. IN ADDITION...
STRONG WINDS WILL DEVELOP AS THE STORM PASSES TO THE EAST...
RESULTING IN WIDESPREAD BLOWING AND DRIFTING SNOW LATE TONIGHT AND
SATURDAY.

IAZ040>042-053-054-066-ILZ001-002-007-009-211230-
/O.CON.KDVN.WS.W.0002.000000T0000Z-090221T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-JONES-JACKSON-CLINTON-JO DAVIESS-
STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
ANAMOSA...MAQUOKETA...CLINTON...GALENA...FREEPORT...
MOUNT CARROLL...STERLING...ROCK FALLS
1016 PM CST FRI FEB 20 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST
SATURDAY. 

STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 6 INCHES IS EXPECTED OVER
THE AREA BY MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME
BLOWING SNOW IS ALSO EXPECTED FROM LATE TONIGHT THROUGH SATURDAY
AS NORTHWEST WINDS STRENGTHEN TO 20 TO 30 MPH.

A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW MEANS THAT HEAVY
SNOW IS LIKELY ALONG WITH CONSIDERABLE BLOWING SNOW THAT WILL
HAMPER VISIBILITIES. THIS WILL RESULT IN DANGEROUS TRAVEL
CONDITIONS. IF YOU MUST TRAVEL...CARRY A WINTER SURVIVAL KIT IN
YOUR VEHICLE.

$$

IAZ051-052-063>065-067-068-077-078-ILZ015>018-024-211230-
/O.CON.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
BENTON-LINN-IOWA-JOHNSON-CEDAR-MUSCATINE-SCOTT-WASHINGTON-LOUISA-
ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-
INCLUDING THE CITIES OF...VINTON...CEDAR RAPIDS...MARENGO...
IOWA CITY...TIPTON...MUSCATINE...BETTENDORF...DAVENPORT...
WASHINGTON...WAPELLO...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO
1016 PM CST FRI FEB 20 2009

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

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

STORM TOTAL SNOWFALL AMOUNTS OF 1 TO 3 INCHES IS EXPECTED BY
MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS
ALSO EXPECTED FROM LATE TONIGHT THROUGH SATURDAY AS NORTHWEST
WINDS STRENGTHEN TO 20 TO 30 MPH.

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.

$$
000 
WWUS43 KDVN 210509
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1109 PM CST FRI FEB 20 2009

...SNOW TONIGHT AND CONTINUING INTO SATURDAY MORNING...

.A STRONG WINTER STORM DEVELOPING OVER THE CENTRAL PLAINS WILL
TRACK NORTHEAST THROUGH MISSOURI AND ILLINOIS TONIGHT AND
SATURDAY SPREADING MODERATE TO LOCALLY HEAVY SNOW ACROSS PORTIONS
OF IOWA AND ILLINOIS. THE HEAVIEST ACCUMULATIONS OF 3 TO 6 INCHES
ARE EXPECTED OVER PORTIONS OF NORTHEAST IOWA INTO NORTHWEST
ILLINOIS...WITH GENERALLY 1 TO 3 INCHES TO THE SOUTH. IN ADDITION...
STRONG WINDS WILL DEVELOP AS THE STORM PASSES TO THE EAST...
RESULTING IN WIDESPREAD BLOWING AND DRIFTING SNOW LATE TONIGHT AND
SATURDAY.

IAZ040>042-053-054-066-ILZ001-002-007-009-211315-
/O.CON.KDVN.WS.W.0002.000000T0000Z-090221T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-JONES-JACKSON-CLINTON-JO DAVIESS-
STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
ANAMOSA...MAQUOKETA...CLINTON...GALENA...FREEPORT...
MOUNT CARROLL...STERLING...ROCK FALLS
1109 PM CST FRI FEB 20 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST
SATURDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 12 PM CST
SATURDAY. 

STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 6 INCHES IS EXPECTED OVER
THE AREA BY MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME
BLOWING SNOW IS ALSO EXPECTED FROM LATE TONIGHT THROUGH SATURDAY
AS NORTHWEST WINDS STRENGTHEN TO 20 TO 30 MPH.

A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW MEANS THAT HEAVY
SNOW IS LIKELY ALONG WITH CONSIDERABLE BLOWING SNOW THAT WILL
HAMPER VISIBILITIES. THIS WILL RESULT IN DANGEROUS TRAVEL
CONDITIONS. IF YOU MUST TRAVEL...CARRY A WINTER SURVIVAL KIT IN
YOUR VEHICLE.

$$

IAZ088-089-099-ILZ025-026-034-035-MOZ010-211315-
/O.EXA.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
HENRY IA-DES MOINES-LEE-HENDERSON-WARREN-HANCOCK-MCDONOUGH-CLARK-
INCLUDING THE CITIES OF...MOUNT PLEASANT...BURLINGTON...
FORT MADISON...OQUAWKA...MONMOUTH...CARTHAGE...MACOMB...KAHOKA
1109 PM CST FRI FEB 20 2009

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 12 PM CST SATURDAY...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
UNTIL 12 PM CST SATURDAY. 

STORM TOTAL SNOWFALL AMOUNTS OF 1 TO 3 INCHES IS EXPECTED BY
MIDDAY SATURDAY...WITH LOCALIZED AREAS AROUND 4 INCHES POSSIBLE
SOUTH OF HIGHWAY 34. CONSIDERABLE DRIFTING AND SOME BLOWING 
SNOW IS ALSO EXPECTED FROM LATE TONIGHT THROUGH SATURDAY AS
NORTHWEST WINDS STRENGTHEN TO 20 TO 30 MPH.

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.

$$

IAZ051-052-063>065-067-068-077-078-ILZ015>018-024-211315-
/O.CON.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
BENTON-LINN-IOWA-JOHNSON-CEDAR-MUSCATINE-SCOTT-WASHINGTON-LOUISA-
ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-
INCLUDING THE CITIES OF...VINTON...CEDAR RAPIDS...MARENGO...
IOWA CITY...TIPTON...MUSCATINE...BETTENDORF...DAVENPORT...
WASHINGTON...WAPELLO...MOLINE...ROCK ISLAND...KEWANEE...
PRINCETON...HENNEPIN...ALEDO
1109 PM CST FRI FEB 20 2009

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

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

STORM TOTAL SNOWFALL AMOUNTS OF 1 TO 3 INCHES IS EXPECTED BY
MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS
ALSO EXPECTED FROM LATE TONIGHT THROUGH SATURDAY AS NORTHWEST
WINDS STRENGTHEN TO 20 TO 30 MPH.

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.

$$
000 
WWUS43 KDVN 210945
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
345 AM CST SAT FEB 21 2009

...SNOW CONTINUING THIS MORNING WITH INCREASING WINDS...

.A STRONG WINTER STORM MOVING ACROSS THE MIDWEST WILL TRACK
NORTHEAST OUT OF ILLINOIS AND INTO MICHIGAN TODAY. IT HAS SPREAD
MODERATE TO LOCALLY HEAVY SNOW ACROSS PORTIONS OF IOWA...ILLINOIS
AND MISSOURI. A BAND OF ACCUMULATIONS FROM 3 TO 6 INCHES HAVE BEEN
OBSERVED FROM NEAR KEOSAUQUA IOWA...NORTHEAST ACROSS BURLINGTON TO
KEWANEE AND PRINCETON ILLINOIS OVERNIGHT. OUTSIDE OF THIS BAND
ONLY 1 TO 3 INCHES OF SNOW HAS FALLEN. MORE SNOW IS EXPECTED TO
FALL DURING THE DAY ON SATURDAY...BUT MAINLY NORTH OF INTERSTATE
80 IN NORTHWEST ILLINOIS. IN ADDITION TO THE SNOW...STRONG WINDS
WILL DEVELOP AS THE STORM PASSES TO THE EAST...RESULTING IN
WIDESPREAD DRIFTING AND BLOWING SNOW THROUGH SATURDAY MORNING.

IAZ040>042-053-054-066-211745-
/O.CAN.KDVN.WS.W.0002.000000T0000Z-090221T1800Z/
/O.EXA.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-JONES-JACKSON-CLINTON-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
ANAMOSA...MAQUOKETA...CLINTON
345 AM CST SAT FEB 21 2009

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...WINTER STORM WARNING IS REPLACED...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
UNTIL NOON CST TODAY. THE WINTER STORM WARNING HAS BEEN REPLACED
BY THIS ADVISORY.

STORM TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES IS EXPECTED BY
MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS
ALSO EXPECTED THROUGH SATURDAY AS NORTHWEST WINDS STRENGTHEN TO
20 TO 30 MPH.

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. BE CAREFUL WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS. THE DRIFTING SNOW WILL MAKE IT DIFFICULT FOR ROAD CREWS TO
KEEP SNOW OFF THE ROADS.

$$

ILZ001-002-007-009-211745-
/O.CON.KDVN.WS.W.0002.000000T0000Z-090221T1800Z/
JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS
345 AM CST SAT FEB 21 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY. 

STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 6 INCHES IS EXPECTED OVER
THE AREA BY MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME
BLOWING SNOW IS ALSO EXPECTED FROM THROUGH SATURDAY MORNING AS
NORTHWEST WINDS STRENGTHEN TO 20 TO 30 MPH.

A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW MEANS THAT HEAVY
SNOW IS LIKELY ALONG WITH CONSIDERABLE BLOWING SNOW THAT WILL
HAMPER VISIBILITIES. THE DRIFTING SNOW WILL MAKE IT DIFFICULT FOR
ROAD CREWS TO KEEP SNOW OFF THE ROADS. THIS WILL RESULT IN
DANGEROUS TRAVEL CONDITIONS. IF YOU MUST TRAVEL...CARRY A WINTER
SURVIVAL KIT IN YOUR VEHICLE.


$$

IAZ076-087-098-MOZ009-211745-
/O.EXA.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
KEOKUK-JEFFERSON-VAN BUREN-SCOTLAND-
INCLUDING THE CITIES OF...SIGOURNEY...FAIRFIELD...KEOSAUQUA....
MEMPHIS
345 AM CST SAT FEB 21 2009

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

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
WEATHER ADVISORY FOR BLOWING AND DRIFTING SNOW...WHICH IS IN
EFFECT UNTIL NOON CST TODAY.

STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 6 INCHES IS EXPECTED BY
MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS
ALSO EXPECTED FROM EARLY THIS MORNING THROUGH MID DAY AS NORTHWEST
WINDS STRENGTHEN TO 20 TO 30 MPH.

A WINTER WEATHER ADVISORY FOR BLOWING SNOW MEANS THAT VISIBILITIES
WILL BE ONE-HALF MILE OR LESS DUE TO STRONG WINDS CAUSING BLOWING
SNOW. BE CAREFUL WHEN TRAVELING...ESPECIALLY IN RURAL AREAS.

$$

IAZ051-052-063>065-067-068-077-078-088-099-ILZ015-034-035-MOZ010-
211745-
/O.CON.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
BENTON-LINN-IOWA-JOHNSON-CEDAR-MUSCATINE-SCOTT-WASHINGTON-LOUISA-
HENRY IA-LEE-ROCK ISLAND-HANCOCK-MCDONOUGH-CLARK-
INCLUDING THE CITIES OF...VINTON...CEDAR RAPIDS...MARENGO...
IOWA CITY...TIPTON...MUSCATINE...BETTENDORF...DAVENPORT...
WASHINGTON...WAPELLO...MOUNT PLEASANT...FORT MADISON...MOLINE...
ROCK ISLAND...CARTHAGE...MACOMB...KAHOKA
345 AM CST SAT FEB 21 2009

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

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

STORM TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES IS EXPECTED BY
MIDDAY SATURDAY...WITH LOCALLY HIGHER AMOUNTS POSSIBLE.
CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS ALSO EXPECTED THIS
MORNING AS NORTHWEST WINDS STRENGTHEN TO 20 TO 30 MPH.

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. BE CAREFUL WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

$$

IAZ089-ILZ016>018-024>026-211745-
/O.CON.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
DES MOINES-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-
INCLUDING THE CITIES OF...BURLINGTON...KEWANEE...PRINCETON...
HENNEPIN...ALEDO...OQUAWKA...MONMOUTH
345 AM CST SAT FEB 21 2009

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

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

STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 6 INCHES IS EXPECTED BY
MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS
ALSO EXPECTED THIS MORNING AS NORTHWEST WINDS STRENGTHEN TO 20 TO
30 MPH.

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. BE CAREFUL WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

$$
000 
WWUS43 KDVN 211511
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
911 AM CST SAT FEB 21 2009

...SNOW CONTINUING THIS MORNING WITH INCREASING WINDS...

.A STRONG WINTER STORM MOVING ACROSS THE MIDWEST WILL TRACK
NORTHEAST OUT OF ILLINOIS AND INTO MICHIGAN TODAY. IT HAS SPREAD
MODERATE TO LOCALLY HEAVY SNOW ACROSS PORTIONS OF IOWA...ILLINOIS
AND MISSOURI. A BAND OF ACCUMULATIONS FROM 3 TO 6 INCHES HAVE
BEEN OBSERVED FROM NEAR KEOSAUQUA IOWA...NORTHEAST ACROSS
BURLINGTON TO KEWANEE AND PRINCETON ILLINOIS OVERNIGHT. OUTSIDE
OF THIS BAND ONLY 1 TO 3 INCHES OF SNOW HAS FALLEN. MORE SNOW IS
EXPECTED TO FALL DURING THE DAY ON SATURDAY...BUT MAINLY NORTH OF
INTERSTATE 80 IN NORTHWEST ILLINOIS. IN ADDITION TO THE SNOW...
STRONG WINDS WILL DEVELOP AS THE STORM PASSES TO THE EAST...
RESULTING IN WIDESPREAD DRIFTING AND BLOWING SNOW THROUGH
SATURDAY MORNING.

ILZ001-002-007-009-211800-
/O.CON.KDVN.WS.W.0002.000000T0000Z-090221T1800Z/
JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS
911 AM CST SAT FEB 21 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY. 

STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 7 INCHES IS EXPECTED OVER THE
AREA BY MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME BLOWING
SNOW IS ALSO EXPECTED FROM THROUGH SATURDAY MORNING AS NORTHWEST
WINDS STRENGTHEN TO 20 TO 30 MPH.

A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW MEANS THAT HEAVY
SNOW IS LIKELY ALONG WITH CONSIDERABLE BLOWING SNOW THAT WILL
HAMPER VISIBILITIES. THE DRIFTING SNOW WILL MAKE IT DIFFICULT FOR
ROAD CREWS TO KEEP SNOW OFF THE ROADS. THIS WILL RESULT IN
DANGEROUS TRAVEL CONDITIONS. IF YOU MUST TRAVEL...CARRY A WINTER
SURVIVAL KIT IN YOUR VEHICLE.

$$

IAZ040>042-051>054-063>068-076>078-087-088-098-099-ILZ015-034-035-
MOZ009-010-211800-
/O.CON.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-VAN BUREN-LEE-ROCK ISLAND-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...KEOSAUQUA....FORT MADISON...MOLINE...
ROCK ISLAND...CARTHAGE...MACOMB...MEMPHIS...KAHOKA
911 AM CST SAT FEB 21 2009

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

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

STORM TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES IS EXPECTED BY
MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS
ALSO EXPECTED THROUGH SATURDAY AS NORTHWEST WINDS STRENGTHEN TO
20 TO 30 MPH.

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. BE CAREFUL WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS. THE DRIFTING SNOW WILL MAKE IT DIFFICULT FOR ROAD CREWS TO
KEEP SNOW OFF THE ROADS.

$$

IAZ089-ILZ016>018-024>026-211800-
/O.CON.KDVN.WW.Y.0007.000000T0000Z-090221T1800Z/
DES MOINES-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-WARREN-
INCLUDING THE CITIES OF...BURLINGTON...KEWANEE...PRINCETON...
HENNEPIN...ALEDO...OQUAWKA...MONMOUTH
911 AM CST SAT FEB 21 2009

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

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

STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 6 INCHES IS EXPECTED BY
MIDDAY SATURDAY. CONSIDERABLE DRIFTING AND SOME BLOWING SNOW IS
ALSO EXPECTED THIS MORNING AS NORTHWEST WINDS STRENGTHEN TO 20 TO
30 MPH.

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. BE CAREFUL WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

$$

NICHOLS
000 
WWUS43 KDVN 211800
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1200 PM CST SAT FEB 21 2009

...LOTS OF BLOWING SNOW UNTIL MID AFTERNOON...

.A STRONG WINTER STORM MOVING ACROSS THE MIDWEST WILL CONTINUE TO
PRODUCE GUSTY NORTHWEST WINDS OF 2THE CITIES OF...FAIRFIELD...MOUNT PLEASANT...
KEOSAUQUA....FORT MADISON...CARTHAGE...MACOMB...MEMPHIS...KAHOKA
1200 PM CST SAT FEB 21 2009

...WINTER WEATHER ADVISORY IS CANCELLED...

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

NORTHWEST WINDS OF 15 TO 25 MPH WITH LOCALIZED GUSTS TO 30 MPH
WILL PRODUCE DRIFTING SNOW WITH ISOLATED AREAS OF BLOWING SNOW IN
OPEN AND RURAL AREAS UNTIL 3 PM.

$$

ILZ001-002-007-009-212100-
/O.EXT.KDVN.WS.W.0002.000000T0000Z-090221T2100Z/
JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS
1200 PM CST SAT FEB 21 2009

...WINTER STORM WARNING NOW IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON. 

STORM TOTAL SNOWFALL AMOUNTS OF 3 TO 7 INCHES IS EXPECTED OVER
THE AREA BY MID AFTERNOON SATURDAY. WIDESPREAD DRIFTING AND
BLOWING SNOW WILL CONTINUE THROUGH MID AFTERNOON FROM NORTHWEST
WINDS OF 20 TO 30 MPH WITH SOME GUSTS OVER 35 MPH. THESE STRONG
WINDS WILL CONTINUE TO RESULT IN NEAR WHITEOUT CONDITIONS IN OPEN
AND RURAL LOCATIONS THAT HAVE RECEIVED OVER 4 INCHES OF SNOW.

A WINTER STORM WARNING FOR SNOW AND BLOWING SNOW MEANS THAT HEAVY
SNOW IS LIKELY ALONG WITH CONSIDERABLE BLOWING SNOW THAT WILL
HAMPER VISIBILITIES. THE DRIFTING SNOW WILL MAKE IT DIFFICULT FOR
ROAD CREWS TO KEEP SNOW OFF THE ROADS. THIS WILL RESULT IN
DANGEROUS TRAVEL CONDITIONS. IF YOU MUST TRAVEL...CARRY A WINTER
SURVIVAL KIT IN YOUR VEHICLE.

$$

IAZ040>042-051>054-063>068-076>078-089-ILZ015-024>026-212100-
/O.EXT.KDVN.WW.Y.0007.000000T0000Z-090221T2100Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-DES MOINES-
ROCK ISLAND-MERCER-HENDERSON-WARREN-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MAQUOKETA...MARENGO...
IOWA CITY...TIPTON...CLINTON...MUSCATINE...BETTENDORF...
DAVENPORT...SIGOURNEY...WASHINGTON...WAPELLO...BURLINGTON...
MOLINE...ROCK ISLAND...ALEDO...OQUAWKA...MONMOUTH
1200 PM CST SAT FEB 21 2009

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

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

STORM TOTAL SNOWFALL AMOUNTS OF 2 TO 4 INCHES IS EXPECTED BY
MID AFTERNOON SATURDAY. ARES OF DRIFTING AND BLOWING SNOW WILL
CONTINUE UNTIL 3 PM FROM NORTHWEST WINDS OF 20 TO 30 MPH WITH
SOME GUSTS OVER 35 MPH. THESE STRONG WINDS WILL CONTINUE TO RESULT
IN VERY LOW VISIBILITIES IN OPEN AND RURAL LOCATIONS THAT HAVE
RECEIVED OVER 3 INCHES OF SNOW.

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. BE CAREFUL WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS. THE DRIFTING SNOW WILL MAKE IT DIFFICULT FOR ROAD CREWS TO
KEEP SNOW OFF THE ROADS.

$$

ILZ016>018-212100-
/O.EXT.KDVN.WW.Y.0007.000000T0000Z-090221T2100Z/
HENRY IL-BUREAU-PUTNAM-
INCLUDING THE CITIES OF...KEWANEE...PRINCETON...HENNEPIN
1200 PM CST SAT FEB 21 2009

...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

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

STORM TOTAL SNOWFALL AMOUNTS OF 2 TO 6 INCHES IS EXPECTED BY MID
AFTERNOON SATURDAY. ARES OF DRIFTING AND BLOWING SNOW WILL CONTINUE
UNTIL 3 PM FROM NORTHWEST WINDS OF 20 TO 30 MPH WITH SOME GUSTS
OVER 35 MPH. THESE STRONG WINDS WILL CONTINUE TO RESULT IN VERY
LOW VISIBILITIES IN OPEN AND RURAL LOCATIONS THAT HAVE RECEIVED
OVER 3 INCHES OF SNOW.

A WINTER WEATHER ADVISORY FOR SNOW AND BLOWING SNOW MEANS THAT
VISIBILITIES WILL BE LIMITED DUE TO A COMBINATION OF FALLING AND
BLOWING SNOW. BE CAREFUL WHEN TRAVELING...ESPECIALLY IN OPEN
AREAS.

$$

NICHOLS
000 
WWUS43 KDVN 212052
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
252 PM CST SAT FEB 21 2009


...WINTER WEATHER ENDING...


ILZ001-002-007-009-212200-
/O.EXP.KDVN.WS.W.0002.000000T0000Z-090221T2100Z/
JO DAVIESS-STEPHENSON-CARROLL-WHITESIDE-
INCLUDING THE CITIES OF...GALENA...FREEPORT...MOUNT CARROLL...
STERLING...ROCK FALLS
252 PM CST SAT FEB 21 2009

...WINTER STORM WARNING WILL EXPIRE AT 3 PM CST THIS AFTERNOON...

THE WINTER STORM WARNING WILL EXPIRE AT 3 PM CST THIS AFTERNOON. 

SNOW HAS DIMINISHED TO FLURRIES WITH NO ADDITIONAL ACCUMULATIONS.
NW WINDS WILL DIMINISH TO 10 TO 20 MPH BY DUSK RESULTING IN MINOR
DRIFTING OF SNOW OVERNIGHT. PATCHY BLOWING SNOW WILL BE POSSIBLE
UNTIL 6 PM IN OPEN AND RURAL LOCATIONS.

$$

IAZ040>042-051>054-063>068-076>078-089-ILZ015-024>026-212200-
/O.EXP.KDVN.WW.Y.0007.000000T0000Z-090221T2100Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-DES MOINES-
ROCK ISLAND-MERCER-HENDERSON-WARREN-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MAQUOKETA...MARENGO...
IOWA CITY...TIPTON...CLINTON...MUSCATINE...BETTENDORF...
DAVENPORT...SIGOURNEY...WASHINGTON...WAPELLO...BURLINGTON...
MOLINE...ROCK ISLAND...ALEDO...OQUAWKA...MONMOUTH
252 PM CST SAT FEB 21 2009

...WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON...

THE WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON. 

SNOW HAS DIMINISHED TO FLURRIES WITH NO ADDITIONAL ACCUMULATIONS.
NW WINDS WILL DIMINISH TO 10 TO 20 MPH BY DUSK RESULTING IN MINOR
DRIFTING OF SNOW OVERNIGHT. PATCHY BLOWING SNOW WILL BE POSSIBLE
UNTIL 6 PM IN OPEN AND RURAL LOCATIONS.

$$

ILZ016>018-212200-
/O.EXP.KDVN.WW.Y.0007.000000T0000Z-090221T2100Z/
HENRY IL-BUREAU-PUTNAM-
INCLUDING THE CITIES OF...KEWANEE...PRINCETON...HENNEPIN
252 PM CST SAT FEB 21 2009

...WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON...

THE WINTER WEATHER ADVISORY WILL EXPIRE AT 3 PM CST THIS
AFTERNOON. 

SNOW HAS DIMINISHED TO FLURRIES WITH NO ADDITIONAL ACCUMULATIONS.
NW WINDS WILL DIMINISH TO 10 TO 20 MPH BY DUSK RESULTING IN MINOR
DRIFTING OF SNOW OVERNIGHT. PATCHY BLOWING SNOW WILL BE POSSIBLE
UNTIL 6 PM IN OPEN AND RURAL LOCATIONS.

$$

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 Feb 20, 3:55 AM CST, 22 minutes earlier.

Area forecast discussion, Feb 20, 3:55 AM CST, 22 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
355 AM CST FRI FEB 20 2009

.SHORT TERM...TODAY AND TONIGHT...IN DEALING WITH THE VERY
VIGOROUS CLIPPER FROM NORTHEASTERN ALBERTA/SASKATCHEWAN
ORIGIN...WILL SIDE WITH THE GFS AND UKMET SOLUTIONS HANDLING LLVL
SFC LOW DEVELOPMENT AND SECONDARY ELEVATED FRONTOGENETICAL FORCING
UNDER APPROACHING MID LEVEL WAVE TONIGHT. BEFORE THEN FOR
TODAY...WILL SIDE WITH THE MIDDLE OF THE ROAD FWC HIGH TEMPS FOR
MOST OF THE NORTHERN TWO THIRDS OF THE DVN CWA IN WAA PATTERN
AHEAD OF APPROACHING SYSTEM AND LEAN TOWARD THE WARMER MAV
GUIDANCE ACRS THE SOUTH. A LEAD WAA WING MAY TRY TO INDUCE SOME
LIGHT PRECIP IN THE NORTHWESTERN CWA BY LATE AFTERNOON...BUT
EXPECT NOT ENOUGH LLVL SATURATION TO TAKE PLACE FOR PRECIP TO
REACH THE SFC UNTIL AFTER 00Z.

BACK TO THE MAIN SHOW FOR TONIGHT...ACCEPTED MODELS AND
THERMODYNAMIC PROFILES SUPPORT WIDESPREAD 3-5 INCHES ALONG AND
NORTHEAST OF A VINTON...TO QUAD CITIES...TO PRINCETON IL LINE
THROUGH 12Z SAT...WITH MORE SNOW PRODUCTION INTO THE MORNING/SEE THE
FOLLOWING DISCUSSION BELOW/. ENHANCED BANDING AND POSSIBLY SOME
THUNDERSNOW IN A SURPRISINGLY UNSTABLE MID LAYER COULD SUPPORT A FEW
SWATHS OF 5-7 INCHES BY SAT MORNING FROM THE CEDAR RAPIDS
AREA...THROUGH CLINTON...STERLING AND MT CARROLL. THIS ALL BANKING
ON SLR/S OF 14 TO 15:1...AND THAT THE EXTENT OF SATURATION ON THE
FCST SOUNDINGS/PROFILES IS IN THE BALL PARK. SOME CONCERN THAT THE
MODELS ARE OVERDOING IT WITH THIS PARAMETER AND THAT THERE WILL NOT
BE ENOUGH OF A DEEP LAYER OF SATURATION IN THE FAVORED -10 TO -20C
REALM FOR A CLIPPER TO PRODUCE THE PROGGED WIDESPREAD 4-8 INCHES.
BUT THE SYSTEM IS VERY DYNAMIC AND STILL WILL LOOK TO INTENSIFY
OVERHEAD...THUS MAY LEAN TOWARD THE HIGHER END OF SNOW PRODUCTION.
ALSO STILL SOME NICE SIGNALS OF RATHER INTENSE BOUTS OF SNOWFALL OF OVER
AN INCH AN HOUR IN OPTIMUM LIFT AND DENDRITIC WINDOW FROM 04Z-07Z OR
SO ALONG THE H85 TO H7 MB LOW/TROF CONVERGENT AXIS NORTH OF I80 INTO
NORTHWEST AND NORTH CENTRAL IL. AREAS ALONG AND SOUTH OF THE HWY 34
CORRIDOR SHOULD ONLY RECEIVE AN INCH OR LESS. WILL SIDE WITH COLDER
MET LOWS FOR TONIGHT.         ..12..

.LONG TERM...SATURDAY THROUGH NEXT THURSDAY...
SATURDAY MORNING IS THE TAIL END OF OUR CLIPPER SYSTEM...WITH SNOW
CONTINUING INTO THE MORNING HOURS ON THE WRAP-AROUND SIDE OF THE
SYSTEM.  850 TO 700 MB FRONTOGENESIS CONTINUES WELL INTO THE MORNING
HOURS...WITH PLENTY OF AVAILABLE MOISTURE STILL FROM 12Z TO 18Z
ALONG WITH THE LIFT.  AND WHILE WE WILL NOT BE IN THE MAXIMUM SNOW
GROWTH REGION SATURDAY MORNING...AM STILL EXPECTING SWE RATIOS UP
AROUND 14 TO 1...FOR ANOTHER 1 TO 2 INCHES ON SATURDAY.  TOGETHER
WITH THE SNOWFALL FROM OVERNIGHT...WE ARE LOOKING AT A MAXIMUM
SNOWFALL SWATH OF 5 TO 7 INCHES FROM APPROXIMATELY DELAWARE COUNTY
IA TO WHITESIDE COUNTY IL.  3 TO 6 INCHES IS EXPECTED NORTH OF A
LINE FROM WASHINGTON IA TO ALEDO IL.  THEN...ON SUNDAY WE ARE
LOOKING AT WINDS SWITCHING AROUND TO THE NORTHWEST AND BECOMING
COUPLED WITH WINDS OF AROUND 30KTS UP AROUND 900MB.  THIS WILL
LIKELY CAUSE SOME BLOWING AND DRIFTING OF THE SNOW.  WITH THESE
FACTORS COMBINED...WE HAVE ISSUED A WINTER STORM WARNING FOR 00Z
TONIGHT THROUGH 18Z SATURDAY...FOR LOCATIONS NORTH OF A LINE FROM
MANCHESTER IA...TO CLINTON IA...TO MORRISON IL. A WINTER WEATHER
ADVISORY WILL BE IN EFFECT FOR THE SAME TIME RANGE...NORTH OF A LINE
FROM WILLIAMSBURG TO WASHINGTON...TO ALEDO IL.

SUNDAY WE HAVE A SURFACE RIDGE BUILDING INTO THE REGION...WHICH
SHOULD PRODUCE A VERY COLD NIGHT SUNDAY NIGHT AFTER SKIES HAVE
CLEARED SOMETIME ON SUNDAY...WITH THE RIDGE JUST EAST OF THE CWA.
MONDAY AND EARLY TUESDAY WE GET A WARM AIR ADVECTION PATTERN SET UP
INTO THIS AREA...FOR GRADUALLY WARMING TEMPERATURES THROUGH BOTH
DAYS.  A MIXTURE OF RAIN OR SNOW MAY MOVE IN HERE TUESDAY
NIGHT...AND CONTINUE INTO WEDNESDAY.  WE GET ANOTHER COLD DUMP INTO
HERE FOR WEDNESDAY NIGHT AND THURSDAY...WITH MORE CHANCES OF
PRECIPITATION.    ..LE..

&&

.AVIATION...
AFTER A VFR DAY TODAY...CIGS/VSBYS TO RAPIDLY DETERIORATE AFTER 00Z
AT THE CID AND DBQ TERMINALS...SPREADING TO MLI AND BRL THROUGH 04Z
AS LLVL SATURATION OCCURS WITH APPROACHING SNOW PRODUCING CLIPPER.
AN OUTSIDE CHANCE FOR A LITTLE FREEZING RAIN AT BRL FROM 00Z-03Z...
BUT SOUNDINGS ARE MAINLY SNOW EVEN IN THE SOUTH BY THE TIME THE
PRECIP BEGINS.  THE CID...DBQ AND MLI TERMINALS COULD EXPERIENCE
SEVERAL HOURS OF LOW IFR OR LIFR CIGS AND VSBYS DO TO HEAVY SNOW
FROM MID EVENING TO 2-3 AM CST. ONSET TIMING FRO SNOW THIS EVENING
STILL SOMEWHAT AT QUESTION...BUT 02Z STILL LOOKS ON TARGET AT DBQ
AND CID...AND AFTER 03Z AT MLI AND BRL. A WIND SWITCH TO THE
NORTHWEST LATE TONIGHT AT CID MAY CAUSE SOME BLOWING SNOW VSBY
LIMITATIONS.   ..12..

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...WINTER STORM WARNING FROM 6 PM THIS EVENING TO 12 PM CST
     SATURDAY FOR CLINTON-DELAWARE-DUBUQUE-JACKSON-JONES.

     WINTER WEATHER ADVISORY FROM 6 PM THIS EVENING TO 12 PM CST
     SATURDAY FOR BENTON-BUCHANAN-CEDAR-IOWA-JOHNSON-LINN-LOUISA-
     MUSCATINE-SCOTT-WASHINGTON.

IL...WINTER STORM WARNING FROM 6 PM THIS EVENING TO 12 PM CST
     SATURDAY FOR CARROLL-JO DAVIESS-STEPHENSON-WHITESIDE.

     WINTER WEATHER ADVISORY FROM 6 PM THIS EVENING TO 12 PM CST
     SATURDAY FOR BUREAU-HENRY IL-MERCER-PUTNAM-ROCK ISLAND.

MO...NONE.
&&

12/LE
Hazardous weather outlook, Feb 19, 3:39 PM CST, 12 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
339 PM CST THU FEB 19 2009

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-202145-
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-
339 PM CST THU FEB 19 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...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A POTENT CLIPPER STORM SYSTEM WILL BRING ACCUMULATING SNOW TO MUCH
OF THE REGION FRIDAY NIGHT INTO SATURDAY. SNOWFALL AMOUNTS ARE
EXPECTED TO BE ABOUT 5 TO 7 INCHES ALONG AND NORTH OF INTERSTATE
80 AND ALONG AND EAST OF THE MISSISSIPPI RIFER WITH LESSER
AMOUNTS TO THE WEST AND SOUTH. LOCATIONS IN NORTHEAST MISSOURI
SHOULD RECEIVE LESS THAN AN INCH. NORTHWEST WINDS GUSTING UP TO 35
MPH LATE FRIDAY NIGHT INTO SATURDAY WILL CAUSE CONSIDERABLE BLOWING
AND DRIFTING OF THE SNOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 20, 4:17 AM CSTWinter Weather AdvisoryDVNBenton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more35 hr

Nearby

Winter Storm Warnings in Iowa, 2009Winter Storm Warnings in Illinois, 2009Every winter storm warning in 2009

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; radar from the NEXRAD Level II archive.