Alert archive / Iowa / Ice Storm Warnings in 2007

Ice Storm Warning 2, NWS Quad Cities, IA

February 24, 20075 counties in Illinois; 8 counties in Iowa

NWS Quad Cities, IA issued this ice storm warning at Feb 24, 2007, 11:31 AM CST for 5 counties in Illinois; 8 counties in Iowa. It was in force for 12 hr. 43 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 24, 2007, 11:31 AM CST (17:31 UTC)
Expired
Feb 25, 2007, 12:00 AM CST
In force
12 hr
Issued by
NWS Quad Cities, IA

Counties Des Moines County, IA, Henry County, IA, Jefferson County, IA, Keokuk County, IA, Lee County, IA, Louisa County, IA, Van Buren County, IA, Washington County, IA, Hancock County, IL, Henderson County, IL, McDonough County, IL, Mercer County, IL, Warren County, IL

The radar

The Quad Cities radar (KDVN), 100 km from the middle of the area, began a volume at 17:32 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 24, 11:42 AM CSTFREEZING RAIN 0.25Washington, IA1/4 INCH ICE ACCUMULATION.
Feb 24, 12:05 PM CSTICE STORM 0What Cheer, IA1/2 INCH ICE.
Feb 24, 12:12 PM CSTICE STORM 05 Ne Fairfield, IA0.4 INCHES OF ICE ON ELEVATED SURFACES. ROADS STARTING TO GLAZE OVER.
Feb 24, 12:25 PM CSTICE STORM 0Fort Madison, IAEST 1/2 INCH ICE ACCUMULATION. TREE LIMBS AND POWER LINES DOWN ACROSS THE COUNTY. MAIN ROADS SLUSHY. SECONDARY ROADS SLICK. HEAVY FREEZING RAIN STILL FALLING. TEMPERATURE 30 DEGREES.
Feb 24, 12:50 PM CSTICE STORM 0Colchester, IL1/3 INCH ICE ACCUMULATION. 5 TO 6 INCH TREE BRANCHES LITTERED THE YARD.
Feb 24, 12:50 PM CSTICE STORM 0What Cheer, IA1/2 INCH ICE ACCUMULATION. 3 TO 4 INCH DIAMETER TREE BRANCHES DOWN.
Feb 24, 12:50 PM CSTICE STORMBurlington, IATREES DOWN BLOCKING ROADS.
Feb 24, 12:50 PM CSTICE STORMDenmark, IA3 TO 6 INCH TREE BRANCHES DOWN. POWER OUT.
Feb 24, 1:05 PM CSTICE STORM 0Fairfield, IA1/4 INCH ICE ACCUMULATION. TREE BRANCHES AND POWER LINES DOWN. TEMPERATURE 32 DEGREES.
Feb 24, 1:10 PM CSTICE STORM 0Montrose, IA1/4 INCH ICE ACCUMULATION. SOME TREE BRANCHES AND POWER LINES DOWN. NO WIDESPREAD DAMAGE. ROADWAYS NOT SLICK.
Feb 24, 1:10 PM CSTICE STORM 0Oquawka, IL1/8 TO 1/4 INCH ICE ACCUMULATION. POWER LINES AND TREE BRANCHES DOWN.
Feb 24, 1:30 PM CSTICE STORM 03 N Burlington, IAMAJOR ICE STORM. 1 1/2 INCH ICE ACCUMULATION. MAJOR TREE DAMAGE TO FARM. MOST OF TREES HAVE AT LEAST HALF THEIR BRANCHES BROKEN OFF. ONE TREE 100 YEARS OLD. BRANCHES FALLING ON POWER LINES.
Feb 24, 1:30 PM CSTICE STORM 0Farmington, IA3/8 INCH ICE ACCUMULATION. TOTAL RAINFALL 1.4 INCHES.TEMPERATURE 32 DEGREES SOME MELTING OF ICE.
Feb 24, 1:55 PM CSTICE STORMSigourney, IAPOWER IS OUT IN PARTS OF SIGOURNEY AND IN RURAL AREAS.
Feb 24, 1:57 PM CSTICE STORMBurlington, IATREES AND POWER LINES DOWN. TRANSFORMERS ON FIRE. POWER OUTAGES WIDESPREAD.
Feb 24, 2:20 PM CSTFREEZING RAIN 0Macomb, ILSIDEWALKS SLUSHY, SMALL BRANCHES BREAKING, AND INTERMITTENT POWER FLUXUATIONS
Feb 24, 2:40 PM CSTFREEZING RAIN 1What Cheer, IATWO TO THREE INCH DIAMETER BRANCHES DOWN. POWER IS OUT.
Feb 24, 2:44 PM CSTFREEZING RAIN 1What Cheer, IATWO TO THREE INCH DIAMETER BRANCHES DOWN. POWER IS OUT.
Feb 24, 2:45 PM CSTICE STORMBurlington, IATREES...LIMBS...AND POWER LINES DOWN...SOME BLOCKING ROADS AND SOME ON TOP OF CARS. MOST OF TOWN WITHOUT POWER.
Feb 24, 2:47 PM CSTICE STORMSalem, IASALEM AND PARTS OF MOUNT PLEASANT ARE WITHOUT POWER.
Feb 24, 2:50 PM CSTFREEZING RAIN 0Fairfield, IACOUNTY WIDE- WIDESPREAD POWER OUTAGES. WHOLE TREES 2-3 FEET IN DIAMETER DOWN. MANY 4 TO 6 INCH BRANCHES DOWN.
Feb 24, 2:55 PM CSTFREEZING RAIN 0.33 Sse Dallas City, ILPOWER LINES DOWN IN TOWN. 0.76 INCHES OF RAIN
Feb 24, 2:55 PM CSTICE STORMWashington, IA2 STOP LIGHTS OUT IN TOWN. LARGE BRANCHES DOWN. ESTIMATED WIND GUSTS 45 TO 50 MPH.
Feb 24, 2:56 PM CSTICE STORM 0Fort Madison, IA1/2 TO 3/4 INCH ICE ON TREES. TREES, LIMBS, POWER LINES AND POLES DOWN.
Feb 24, 2:58 PM CSTFREEZING RAIN 03 N Burlington, IAMUCH TREE DAMAGE TO 100 YEAR OLD TREES. POWER IS OUT.
Feb 24, 3:07 PM CSTICE STORMFort Madison, IAPOWER LINES DOWN. FRANKLIN AND DENMARK WITHOUT POWER. WIDESPREAD NUMEROUS LIMBS AND TREES DOWN.
Feb 24, 3:15 PM CSTFREEZING RAIN 0.5Macomb, ILMAJOR TREE LIMBS DOWN IN THE 1100 BLOCK E. WASHINGTON. ICING ON POWER LINES, SIGNS, BUILDINGS. SMALL BRANCHES DOWN ALL ACROSS THE CITY.
Feb 24, 3:25 PM CSTFREEZING RAIN 0.6Brighton, IASINCE 7 A.M. 0.95 INCHES OF NEW PRECIPITATION. ONE HALF INCH OF ICE ACCUMULATION HAS BROUGHT DOWN TREE LIMBS AND POWER LINES.
Feb 24, 3:31 PM CSTFREEZING RAIN 0.22 N New Windsor, ILFREEZING RAIN HAS TURNED INTO A MIXTURE OF FREEZING RAIN, SLEET, AND SNOW.
Feb 24, 3:55 PM CSTFREEZING RAIN 0.3Macomb, ILPOWER OUT ON WEST SIDE OF MACOMB AND 0.10 INCH OF SNOW HAS ACCUMULATED ON TOP OF THE ICE.
Feb 24, 3:57 PM CSTICE STORMBurlington, IATREES AND POWERLINES DOWN. 0.87 INCH OF PRECIPITATION MEASURED SINCE 8 AM.
Feb 24, 4:11 PM CSTFREEZING RAIN 0.6Donnellson, IAPOWER IS OUT AND NUMEROUS TREE LIMBS DOWN.
Feb 24, 4:19 PM CSTICE STORM 0Fairfield, IA1.24 INCHES OF PRECIPITATION. 1/4 INCH OF ICE.
Feb 24, 4:19 PM CSTICE STORMOquawka, ILMANY TREES AND POWER LINES DOWN IN TOWN AND THROUGHOUT HENDERSON COUNTY.
Feb 24, 4:24 PM CSTFREEZING RAIN 0.6West Burlington, IAWIDESPREAD POWER OUTAGE.
Feb 24, 4:25 PM CSTICE STORMN Hillsboro, IALIMBS AND POWER LINES DOWN.
Feb 24, 4:45 PM CSTFREEZING RAIN 0.3Keosauqua, IATREE LIMBS 3 TO 4 INCHES DOWN AROUND TOWN. INTERMITTENT POWER OUTAGES. POWER OUT AT FARMINGTON IA WITH NUMEROUS LARGE TREES DOWN BLOCKING ROADS.
Feb 24, 5:12 PM CSTFREEZING RAIN 0.25Keosauqua, IA
Feb 24, 5:12 PM CSTFREEZING RAIN 1Keosauqua, IA
Feb 24, 5:57 PM CSTFREEZING RAIN 0.25Macomb, IL3/16 INCH ICE COVERING ALL SURFACES
Feb 24, 7:15 PM CSTSNOW 1Fairfield, IAPRECIPITATION CHANGED OVER TO SNOW. SHELTERS OPEN. NUMEROUS TREES AND POWERLINES/POWER OUTAGES THROUGOUT THE COUNTY.
Feb 24, 8:45 PM CSTICE STORMRoseville, ILPOWER OUTAGE.
Feb 24, 10:00 PM CSTICE STORM7 N Mount Pleasant, IAPOWER LINES AND 3 POWER POLES DOWN AT JUNCTION OF HIGHWAY 218 AND 160TH STREET. DELAYED REPORT.

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, 5.5 hours before the alert went out and 105 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 2007-02-24Temperature 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 2007-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 570 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
1873 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
570 m²/s²
0-3 km storm-relative helicity
654 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 241731
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1131 AM CST SAT FEB 24 2007

...DANGEROUS WINTER STORM IMPACTING THE REGION...

.A VERY INTENSE STORM SYSTEM IN THE CENTRAL PLAINS WILL LIFT
NORTHEAST ACROSS KANSAS...MISSOURI INTO NORTHERN ILLINOIS TODAY
THROUGH SUNDAY...SEVERELY IMPACTING THE AREA WITH SIGNIFICANT ICE
AND SNOW ACCUMULATIONS COMBINED WITH VERY STRONG WINDS. FREEZING
RAIN AND RAIN OCCURRING OVER THE AREA THIS AFTERNOON WILL CHANGE TO ALL
SNOW LATE THIS AFTERNOON AND TONIGHT AS THE SYSTEM PASSES SOUTH OF
THE AREA. ICE ACCUMULATIONS OF A QUARTER INCH OR MORE WILL OCCUR
IN MUCH OF THE WARNING AREA TODAY. THIS HEAVY ICING...COMBINED
WITH STRONG EAST WINDS FROM 25 TO 35 MPH WITH GUSTS UP TO 45
MPH...WILL RESULT IN DOWNED TREE BRANCHES AND POWER LINES.

LATE THIS AFTERNOON AND TONIGHT...AS THE PRECIPITATION TURNS TO
HEAVY SNOW...STRONG WINDS WILL PRODUCE BLIZZARD CONDITIONS ALONG
AND NORTH OF THE ROUTE 30 CORRIDOR. SOME WHITEOUT AND NEAR
BLIZZARD CONDITIONS WILL OCCUR DOWN TO THE INTERSTATE 80 CORRIDOR
TONIGHT. SIGNIFICANT SNOW ACCUMULATIONS WILL OCCUR BY SUNDAY
AFTERNOON ALONG AND NORTH OF THE INTERSTATE 80 CORRIDOR...WITH
AMOUNTS GENERALLY RANGING FROM 8 TO 16 INCHES. THE HIGHER AMOUNTS
WILL BE NORTH OF THE ROUTE 30 CORRIDOR.

IAZ098-099-ILZ034-035-250000-
/O.UPG.KDVN.WW.Y.0006.000000T0000Z-070225T0000Z/
/O.NEW.KDVN.IS.W.0002.070224T1731Z-070225T0000Z/
VAN BUREN-LEE-HANCOCK-MCDONOUGH-
INCLUDING THE CITIES OF...KEOSAUQUA....FORT MADISON...CARTHAGE...
MACOMB
1131 AM CST SAT FEB 24 2007

...ICE STORM WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED AN ICE
STORM WARNING...WHICH IS IN EFFECT UNTIL 6 PM CST THIS EVENING.
THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. 

FREEZING RAIN WILL CONTINUE INTO THE AFTERNOON HOURS...THEN CHANGE
TO ALL RAIN BY THIS EVENING. ICE ACCUMULATIONS AROUND A QUARTER OF AN
INCH HAVE ALREADY OCCURRED IN A FEW LOCATIONS. AN ADDITIONAL ONE
OR TWO TENTHS OF ICE IS STILL EXPECTED. THE HEAVY ICE ACCUMULATION
COMBINED WITH STRONG EAST WINDS GUSTING TO 40 MPH AT TIMES WILL
CAUSE SOME TREES AND POWERS LINES TO COME DOWN.

AN ICE STORM WARNING MEANS SIGNIFICANT ICE ACCUMULATIONS OF ONE-
QUARTER INCH OR MORE ARE EXPECTED OR OCCURRING.  THIS WILL MAKE
TRAVEL VERY DANGEROUS HAZARDOUS OR IMPOSSIBLE...SO ONLY TRAVEL IN
AN EMERGENCY AND TAKE YOUR WINTER SURVIVAL KIT.  ICE
ACCUMULATIONS AND WINDS WILL LIKELY LEAD TO FALLING TREE
BRANCHES...SNAPPED POWER LINES AND LOSS OF POWER.

$$

IAZ040>042-051>054-ILZ001-002-007-250145-
/O.CON.KDVN.BZ.W.0001.000000T0000Z-070225T1200Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-JO DAVIESS-
STEPHENSON-CARROLL-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MAQUOKETA...GALENA...FREEPORT...
MOUNT CARROLL
1131 AM CST SAT FEB 24 2007

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 AM CST SUNDAY...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 AM CST SUNDAY. 


FREEZING RAIN AND SLEET WILL CHANGE TO SNOW BY LATE THIS AFTERNOON. 
ICE ACCUMULATIONS AROUND QUARTER OF AN INCH WILL OCCUR BEFORE THE
THE SWITCH TO SNOW. STRONG EAST WINDS FROM 25 TO 35 MPH WITH GUSTS
UP TO 45 MPH... WILL COMBINE WITH THE ICE ACCUMULATIONS TO CAUSE
THE DOWNING OF SOME TREES AND POWER LINES. LATE THIS AFTERNOON
AFTER THE SNOW BEGINS...THE STRONG WINDS WILL PRODUCE WHITEOUT
AND BLIZZARD CONDITIONS. VERY HAZARDOUS AND POTENTIALLY LIFE
THREATENING CONDITIONS WILL OCCUR BY LATE AFTERNOON AND THIS
EVENING. BY SUNDAY...SNOW ACCUMULATIONS FROM 10 TO 16 INCHES ARE
EXPECTED IN THE BLIZZARD WARNING AREA.

A BLIZZARD WARNING MEANS THAT FALLING AND BLOWING SNOW...STRONG
WINDS AND POOR VISIBILITIES OF ONE-QUARTER MILE OR LESS ARE
OCCURRING OR IMMINENT. THIS WILL CAUSE WHITEOUT CONDITIONS...
MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL IF YOU MUST
TRAVEL DUE TO AN EMERGENCY...TAKE YOUR WINTER SURVIVAL KIT. IF
YOU GET STRANDED...STAY WITH YOUR VEHICLE UNTIL HELP ARRIVES.

$$

IAZ063>066-ILZ009-250145-
/O.CON.KDVN.WS.W.0002.000000T0000Z-070226T0000Z/
IOWA-JOHNSON-CEDAR-CLINTON-WHITESIDE-
INCLUDING THE CITIES OF...MARENGO...IOWA CITY...TIPTON...
CLINTON...STERLING...ROCK FALLS
1131 AM CST SAT FEB 24 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY. 

A MIX OF FREEZING RAIN AND SLEET WILL CONTINUE THIS AFTERNOON THEN
CHANGE TO SNOW BY THIS EVENING. ICE ACCUMULATIONS OF A QUARTER
INCH OR MORE AND STRONG WINDS WILL CAUSE THE DOWNING OF SOME TREES
AND POWER LINES.  THE STRONG WINDS WILL COMBINE WITH THE HEAVY
SNOW TONIGHT TO PRODUCE WHITEOUT AND NEAR BLIZZARD CONDITIONS AT
TIMES. VERY HAZARDOUS AND POTENTIALLY LIFE THREATENING CONDITIONS
WILL BE POSSIBLE BY THIS EVENING. BY SUNDAY AFTERNOON...SNOW
ACCUMULATIONS FROM 6 TO 12 INCHES WILL HAVE OCCURRED IN THE
WARNING AREA.

A WINTER STORM WARNING MEANS 6 TO 8 INCHES OR MORE OF SNOW...
FALLING AT INTENSE RATES AT TIMES OF 2 TO 3 INCHES PER HOUR...
COMBINED WITH STRONG WINDS WILL OCCUR. ALSO SIGNIFICANT AMOUNTS OF
FREEZING RAIN AND SLEET WILL OCCUR. THIS WILL MAKE TRAVEL VERY
DANGEROUS OR IMPOSSIBLE...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE
YOUR WINTER SURVIVAL KIT.

$$

IAZ067-068-076>078-ILZ015>018-024-250145-
/O.CON.KDVN.WS.W.0002.000000T0000Z-070226T0000Z/
MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-ROCK ISLAND-HENRY IL-
BUREAU-PUTNAM-MERCER-
INCLUDING THE CITIES OF...MUSCATINE...BETTENDORF...DAVENPORT...
SIGOURNEY...WASHINGTON...WAPELLO...MOLINE...ROCK ISLAND...
KEWANEE...PRINCETON...HENNEPIN...ALEDO
1131 AM CST SAT FEB 24 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY. 

FREEZING RAIN AND SLEET CHANGE TO HEAVY SNOW BY THIS EVENING. UP TO A
HALF OF AN INCH OF ICE ACCUMULATION WILL OCCUR BEFORE THE CHANGE
TO SNOW. STRONG EAST WINDS FROM 25 TO 35 MPH WITH GUSTS UP TO 45
MPH...WILL COMBINE WITH THE ICE ACCUMULATION TO PRODUCE DOWNED
POWER LINES AND TREE LIMBS. THE STRONG WINDS WILL COMBINE WITH THE
HEAVY SNOW TONIGHT TO PRODUCE WHITEOUT AND NEAR BLIZZARD
CONDITIONS AT TIMES. VERY HAZARDOUS AND POTENTIALLY LIFE
THREATENING CONDITIONS WILL BE POSSIBLE BY THIS EVENING. BY SUNDAY
AFTERNOON...SNOW ACCUMULATIONS FROM 3 TO 7 INCHES WILL HAVE
OCCURRED IN THE WARNING AREA.

A WINTER STORM WARNING MEANS 6 TO 8 INCHES OR MORE OF SNOW...
FALLING AT INTENSE RATES AT TIMES OF 2 TO 3 INCHES PER HOUR...
COMBINED WITH STRONG WINDS WILL OCCUR. ALSO SIGNIFICANT AMOUNTS OF
FREEZING RAIN AND SLEET WILL OCCUR. THIS WILL MAKE TRAVEL VERY
DANGEROUS OR IMPOSSIBLE...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE
YOUR WINTER SURVIVAL KIT.

$$

IAZ087>089-ILZ025-026-250145-
/O.CON.KDVN.WS.W.0002.000000T0000Z-070226T0000Z/
JEFFERSON-HENRY IA-DES MOINES-HENDERSON-WARREN-
INCLUDING THE CITIES OF...FAIRFIELD...MOUNT PLEASANT...
BURLINGTON...OQUAWKA...MONMOUTH
1131 AM CST SAT FEB 24 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY. 

A MIX OF FREEZING RAIN AND SLEET WILL CHANGE TO HEAVY SNOW THIS
EVENING. SIGNIFICANT ICE ACCUMULATION OF A HALF INCH OR GREATER WILL
OCCUR THIS AFTERNOON...BEFORE THE CHANGE TO SNOW. STRONG EAST WINDS
FROM 25 TO 35 MPH WITH GUSTS UP TO 45 MPH...WILL COMBINE WITH THE
HEAVY ICE ACCUMULATION TO PRODUCE DOWNED POWER LINES AND TREE
LIMBS. VERY HAZARDOUS AND POTENTIALLY LIFE THREATENING CONDITIONS
WILL BE IN FULL SWING BY THIS EVENING. BY SUNDAY AFTERNOON...SNOW
ACCUMULATIONS FROM 1 TO 4 INCHES ARE EXPECTED IN THE WARNING AREA.

A WINTER STORM WARNING MEANS SIGNIFICANT ICING COMBINED WITH
STRONG WINDS AND SNOW WILL OCCUR. THIS WILL MAKE TRAVEL VERY
DANGEROUS OR IMPOSSIBLE...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE
YOUR WINTER SURVIVAL KIT.

$$

MOZ009-010-250000-
/O.CON.KDVN.WW.Y.0006.000000T0000Z-070225T0000Z/
SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MEMPHIS...KAHOKA
1131 AM CST SAT FEB 24 2007

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING. 

A MIX OF RAIN...FREEZING RAIN AND SLEET WILL CONTINUE THIS
AFTERNOON...THEN CHANGE OVER TO SNOW TONIGHT. UP TO A TENTH OF AN INCH
OF ICE ACCUMULATION IS EXPECTED TODAY. AN INCH OR LESS OF SNOW
ACCUMULATION IS EXPECTED BY SUNDAY.

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

$$
1 follow-up statement
000 
WWUS43 KDVN 242222
WSWDVN

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
422 PM CST SAT FEB 24 2007

...DANGEROUS WINTER STORM IMPACTING THE REGION...

.A VERY INTENSE STORM SYSTEM IN THE CENTRAL PLAINS WILL LIFT
NORTHEAST ACROSS KANSAS...MISSOURI INTO NORTHERN ILLINOIS TODAY
THROUGH SUNDAY...SEVERELY IMPACTING THE AREA WITH SIGNIFICANT ICE
AND SNOW ACCUMULATIONS COMBINED WITH VERY STRONG WINDS. FREEZING
RAIN AND RAIN OCCURRING OVER THE AREA THIS AFTERNOON WILL CHANGE
TO ALL SNOW LATE THIS AFTERNOON AND TONIGHT AS THE SYSTEM PASSES
SOUTH OF THE AREA. ICE ACCUMULATIONS OF A QUARTER INCH OR MORE
WILL OCCUR IN MUCH OF THE WARNING AREA TODAY. THIS HEAVY ICING...
COMBINED WITH STRONG EAST WINDS FROM 25 TO 35 MPH WITH GUSTS UP
TO 45 MPH...WILL RESULT IN DOWNED TREE BRANCHES AND POWER LINES.

LATE THIS AFTERNOON AND TONIGHT...AS THE PRECIPITATION TURNS TO
HEAVY SNOW...STRONG WINDS WILL PRODUCE BLIZZARD CONDITIONS ALONG
AND NORTH OF THE ROUTE 30 CORRIDOR. SOME WHITEOUT AND NEAR
BLIZZARD CONDITIONS WILL OCCUR DOWN TO THE INTERSTATE 80 CORRIDOR
TONIGHT. SIGNIFICANT SNOW ACCUMULATIONS WILL OCCUR BY SUNDAY
AFTERNOON ALONG AND NORTH OF THE INTERSTATE 80 CORRIDOR...WITH
AMOUNTS GENERALLY RANGING FROM 8 TO 16 INCHES. THE HIGHER AMOUNTS
WILL BE NORTH OF THE ROUTE 30 CORRIDOR.

MOZ009-010-242330-
/O.CAN.KDVN.WW.Y.0006.000000T0000Z-070225T0000Z/
SCOTLAND-CLARK-
INCLUDING THE CITIES OF...MEMPHIS...KAHOKA
422 PM CST SAT FEB 24 2007

...WINTER WEATHER ADVISORY IS CANCELLED...

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

TEMPERATURES HAVE WARMED ENOUGH TO END THE THREAT OF FREEZING RAIN
OVER THE AREA. RAIN WILL CONTINUE TONIGHT INTO SUNDAY THEN CHANGE TO
SNOW SUNDAY AFTERNOON. SNOWFALL ACCUMULATIONS WILL BE AROUND AN
INCH OR LESS.  

$$

IAZ040>042-051>054-ILZ001-002-007-250630-
/O.EXB.KDVN.WS.W.0002.070225T1200Z-070226T0000Z/
/O.CON.KDVN.BZ.W.0001.000000T0000Z-070225T1200Z/
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-JO DAVIESS-
STEPHENSON-CARROLL-
INCLUDING THE CITIES OF...INDEPENDENCE...MANCHESTER...DUBUQUE...
VINTON...CEDAR RAPIDS...ANAMOSA...MAQUOKETA...GALENA...FREEPORT...
MOUNT CARROLL
422 PM CST SAT FEB 24 2007

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 AM CST SUNDAY...
...WINTER STORM WARNING IN EFFECT FROM 6 AM TO 6 PM CST SUNDAY...

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED A WINTER
STORM WARNING...WHICH IS IN EFFECT FROM 6 AM TO 6 PM CST SUNDAY.
A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 AM CST SUNDAY. 

A MIX OF FREEZING RAIN...SLEET AND SNOW WILL CHANGE TO ALL SNOW
EARLY THIS EVENING. SNOW...HEAVY AT TIMES...WILL CONTINUE INTO
SUNDAY WITH ACCUMULATIONS OF 10 TO 12 INCHES EXPECTED.
TONIGHT...EAST WINDS AT 20 TO 30 MPH WITH GUSTS TO 40 MPH AND THE
HEAVY SNOW WILL COMBINE TO CREATE BLIZZARD CONDITIONS OVER NIGHT
WITH NEAR ZERO VISIBILITIES IN SNOW AND BLOWING SNOW. THE SNOW AND
BLOWING SNOW WILL CONTINUE INTO SUNDAY...HOWEVER WINDS WILL
DIMINISH SOME SUNDAY AS THEY TURN TO THE NORTHWEST.

A BLIZZARD WARNING MEANS THAT FALLING AND BLOWING SNOW...STRONG
WINDS AND POOR VISIBILITIES OF ONE-QUARTER MILE OR LESS ARE
OCCURRING OR IMMINENT. THIS WILL CAUSE WHITEOUT CONDITIONS...
MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL IF YOU MUST
TRAVEL DUE TO AN EMERGENCY...TAKE YOUR WINTER SURVIVAL KIT. IF YOU
GET STRANDED...STAY WITH YOUR VEHICLE UNTIL HELP ARRIVES.

NUMEROUS POWER OUTAGES HAVE ALREADY OCCURRED FROM THE ICE
TODAY...AND ADDITIONAL POWER OUTAGES ARE LIKELY TONIGHT. BE
EXTREMELY CAREFUL BECAUSE OF THE RISK OF FIRE. IF POSSIBLE USE
FLASHLIGHTS...NOT CANDLES...FOR LIGHT.


$$

IAZ076>078-ILZ024-250600-
/O.EXB.KDVN.IS.W.0002.000000T0000Z-070225T0600Z/
/O.EXT.KDVN.WS.W.0002.070225T0600Z-070226T0000Z/
KEOKUK-WASHINGTON-LOUISA-MERCER-
INCLUDING THE CITIES OF...SIGOURNEY...WASHINGTON...WAPELLO...
ALEDO
422 PM CST SAT FEB 24 2007

...ICE STORM WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT...
...WINTER STORM WARNING NOW IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST SUNDAY...

AN ICE STORM WARNING IS IN EFFECT UNTIL MIDNIGHT TONIGHT. A WINTER
STORM WARNING IS IN EFFECT FROM MIDNIGHT UNTIL 6 PM CST SUNDAY.

THE NATIONAL WEATHER SERVICE IN QUAD CITIES HAS ISSUED AN ICE
STORM WARNING...WHICH IS IN EFFECT UNTIL MIDNIGHT CST TONIGHT.
THE WINTER STORM WARNING IS NOW IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM CST SUNDAY

FREEZING RAIN AND SLEET WILL CONTINUE OVER THE AREA PRODUCING
ANOTHER QUARTER INCH OF ICE ACCUMULATION. THE ICE ACCUMULATION
COMBINED WITH STRONG EAST WINDS WILL CONTINUE TO CAUSE POWER
OUTAGES THROUGHOUT THE AREA.

THE FREEZING RAIN IS EXPECTED TO CHANGE TO SNOW AROUND MIDNIGHT.
THE SNOW WILL CONTINUE INTO SUNDAY. TOTAL SNOW ACCUMULATIONS BY
SUNDAY AFTERNOON SHOULD RANGE FROM 3 TO 6 INCHES. STRONG WINDS
WILL CREATE CONSIDERABLE BLOWING AND DRIFTING SNOW REDUCING
VISIBILITIES TO NEAR ZERO AT TIMES AND CAUSING DANGEROUS TRAVEL
CONDITIONS.

AN ICE STORM WARNING MEANS SIGNIFICANT ICE ACCUMULATIONS OF ONE-
QUARTER INCH OR MORE ARE EXPECTED OR OCCURRING.  THIS WILL MAKE
TRAVEL VERY DANGEROUS HAZARDOUS OR IMPOSSIBLE...SO ONLY TRAVEL IN
AN EMERGENCY AND TAKE YOUR WINTER SURVIVAL KIT.  ICE
ACCUMULATIONS AND WINDS WILL LIKELY LEAD TO FALLING TREE
BRANCHES...SNAPPED POWER LINES AND LOSS OF POWER.

A WINTER STORM WARNING IS ISSUED WHEN A COMBINATION OF SNOW AND
WIND WILL CREATE DANGEROUS OR IMPOSSIBLE TRAVEL CONDITIONS.

NUMEROUS POWER OUTAGES HAVE ALREADY OCCURRED FROM THE ICE
TODAY...AND ADDITIONAL POWER OUTAGES ARE LIKELY TONIGHT. BE
EXTREMELY CAREFUL BECAUSE OF THE RISK OF FIRE. IF POSSIBLE USE
FLASHLIGHTS...NOT CANDLES...FOR LIGHT.

$$

IAZ087>089-ILZ025-026-250600-
/O.EXB.KDVN.IS.W.0002.000000T0000Z-070225T0600Z/
/O.EXT.KDVN.WS.W.0002.070225T0600Z-070226T0000Z/
JEFFERSON-HENRY IA-DES MOINES-HENDERSON-WARREN-
INCLUDING THE CITIES OF...FAIRFIELD...MOUNT PLEASANT...
BURLINGTON...OQUAWKA...MONMOUTH
422 PM CST SAT FEB 24 2007

...ICE STORM WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT...
...WINTER STORM WARNING NOW IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST SUNDAY...

AN ICE STORM WARNING IS IN EFFECT UNTIL MIDNIGHT TONIGHT. A WINTER
STORM WARNING IS IN EFFECT FROM MIDNIGHT UNTIL 6 PM CST SUNDAY.

FREEZING RAIN AND SLEET WILL CONTINUE OVER THE AREA PRODUCING
ANOTHER QUARTER INCH OF ICE ACCUMULATION. THE ICE ACCUMULATION
COMBINED WITH STRONG EAST WINDS WILL CONTINUE TO CAUSE POWER
OUTAGES THROUGHOUT THE AREA.

THE FREEZING RAIN IS EXPECTED TO CHANGE TO SNOW AFTER MIDNIGHT. THE
SNOW WILL CONTINUE INTO SUNDAY. TOTAL SNOW ACCUMULATIONS BY SUNDAY
AFTERNOON SHOULD RANGE FROM 1 TO 3 INCHES. STRONG WINDS WILL CREATE
CONSIDERABLE BLOWING AND DRIFTING SNOW REDUCING VISIBILITIES TO
NEAR ZERO AT TIMES AND CAUSING DANGEROUS TRAVEL CONDITIONS.

AN ICE STORM WARNING MEANS SIGNIFICANT ICE ACCUMULATIONS OF ONE-
QUARTER INCH OR MORE ARE EXPECTED OR OCCURRING.  THIS WILL MAKE
TRAVEL VERY DANGEROUS HAZARDOUS OR IMPOSSIBLE...SO ONLY TRAVEL IN
AN EMERGENCY AND TAKE YOUR WINTER SURVIVAL KIT.  ICE
ACCUMULATIONS AND WINDS WILL LIKELY LEAD TO FALLING TREE
BRANCHES...SNAPPED POWER LINES AND LOSS OF POWER.

A WINTER STORM WARNING IS ISSUED WHEN A COMBINATION OF SNOW AND
WIND WILL CREATE DANGEROUS OR IMPOSSIBLE TRAVEL CONDITIONS.

NUMEROUS POWER OUTAGES HAVE ALREADY OCCURRED FROM THE ICE
TODAY...AND ADDITIONAL POWER OUTAGES ARE LIKELY TONIGHT. BE
EXTREMELY CAREFUL BECAUSE OF THE RISK OF FIRE. IF POSSIBLE USE
FLASHLIGHTS...NOT CANDLES...FOR LIGHT.

$$

IAZ098-099-ILZ034-035-250600-
/O.EXT.KDVN.IS.W.0002.000000T0000Z-070225T0600Z/
VAN BUREN-LEE-HANCOCK-MCDONOUGH-
INCLUDING THE CITIES OF...KEOSAUQUA....FORT MADISON...CARTHAGE...
MACOMB
422 PM CST SAT FEB 24 2007

...ICE STORM WARNING NOW IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

THE ICE STORM WARNING IS NOW IN EFFECT UNTIL MIDNIGHT CST
TONIGHT. 

FREEZING RAIN AND SLEET WILL CONTINUE OVER THE AREA PRODUCING
ANOTHER QUARTER INCH OF ICE ACCUMULATION. THE ICE ACCUMULATION
COMBINED WITH STRONG EAST WINDS WILL CONTINUE TO CAUSE POWER
OUTAGES THROUGHOUT THE AREA.

THE FREEZING RAIN IS EXPECTED TO CHANGE TO RAIN BY MIDNIGHT...WITH
THE RAIN CHANGING TO LIGHT SNOW SUNDAY. SNOW ACCUMULATIONS AROUND
AN INCH ARE POSSIBLE BY SUNDAY AFTERNOON.

AN ICE STORM WARNING MEANS SIGNIFICANT ICE ACCUMULATIONS OF ONE-
QUARTER INCH OR MORE ARE EXPECTED OR OCCURRING. THIS WILL MAKE
TRAVEL VERY DANGEROUS HAZARDOUS OR IMPOSSIBLE...SO ONLY TRAVEL IN
AN EMERGENCY AND TAKE YOUR WINTER SURVIVAL KIT. ICE ACCUMULATIONS
AND WINDS WILL LIKELY LEAD TO FALLING TREE BRANCHES...SNAPPED
POWER LINES AND LOSS OF POWER.

NUMEROUS POWER OUTAGES HAVE ALREADY OCCURRED FROM THE ICE
TODAY...AND ADDITIONAL POWER OUTAGES ARE LIKELY TONIGHT. BE
EXTREMELY CAREFUL BECAUSE OF THE RISK OF FIRE. IF POSSIBLE USE
FLASHLIGHTS...NOT CANDLES...FOR LIGHT.

$$

IAZ063>066-ILZ009-250630-
/O.CON.KDVN.WS.W.0002.000000T0000Z-070226T0000Z/
IOWA-JOHNSON-CEDAR-CLINTON-WHITESIDE-
INCLUDING THE CITIES OF...MARENGO...IOWA CITY...TIPTON...
CLINTON...STERLING...ROCK FALLS
422 PM CST SAT FEB 24 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY. 

A MIX OF FREEZING RAIN AND SLEET CHANGE TO SNOW BY EVENING.
ADDITIONAL ICE ACCUMULATIONS UP TO A QUARTER INCH ARE POSSIBLE. THE
SNOW OVERNIGHT WILL BE HEAVY AT TIMES AND COMBINED WITH THE STRONG
WINDS...WILL CREATE NEAR BLIZZARD CONDITIONS. TOTAL SNOW
ACCUMULATIONS BY SUNDAY AFTERNOON SHOULD BE IN THE 7 TO 9 INCH
RANGE. 

A WINTER STORM WARNING MEANS 6 TO 8 INCHES OR MORE OF SNOW...
FALLING AT INTENSE RATES AT TIMES OF 2 TO 3 INCHES PER HOUR...
COMBINED WITH STRONG WINDS WILL OCCUR. ALSO SIGNIFICANT AMOUNTS
OF FREEZING RAIN AND SLEET WILL OCCUR. THIS WILL MAKE TRAVEL VERY
DANGEROUS OR IMPOSSIBLE...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE
YOUR WINTER SURVIVAL KIT.

NUMEROUS POWER OUTAGES HAVE ALREADY OCCURRED FROM THE ICE
TODAY...AND ADDITIONAL POWER OUTAGES ARE LIKELY TONIGHT. BE
EXTREMELY CAREFUL BECAUSE OF THE RISK OF FIRE. IF POSSIBLE USE
FLASHLIGHTS...NOT CANDLES...FOR LIGHT.

$$

IAZ067-068-ILZ015>018-250630-
/O.CON.KDVN.WS.W.0002.000000T0000Z-070226T0000Z/
MUSCATINE-SCOTT-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-
INCLUDING THE CITIES OF...MUSCATINE...BETTENDORF...DAVENPORT...
MOLINE...ROCK ISLAND...KEWANEE...PRINCETON...HENNEPIN
422 PM CST SAT FEB 24 2007

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST SUNDAY. 

A MIX OF FREEZING RAIN AND SLEET CHANGE TO SNOW BY EVENING.
ADDITIONAL ICE ACCUMULATIONS UP TO A QUARTER INCH ARE POSSIBLE. THE
SNOW OVERNIGHT WILL BE HEAVY AT TIMES AND COMBINED WITH THE STRONG
WINDS...WILL CREATE NEAR BLIZZARD CONDITIONS. TOTAL SNOW
ACCUMULATIONS BY SUNDAY AFTERNOON SHOULD BE IN THE 3 TO 6 INCH
RANGE.

A WINTER STORM WARNING MEANS 6 TO 8 INCHES OR MORE OF SNOW...
FALLING AT INTENSE RATES AT TIMES OF 2 TO 3 INCHES PER HOUR...
COMBINED WITH STRONG WINDS WILL OCCUR. ALSO SIGNIFICANT AMOUNTS
OF FREEZING RAIN AND SLEET WILL OCCUR. THIS WILL MAKE TRAVEL VERY
DANGEROUS OR IMPOSSIBLE...SO ONLY TRAVEL IN AN EMERGENCY AND TAKE
YOUR WINTER SURVIVAL KIT.

NUMEROUS POWER OUTAGES HAVE ALREADY OCCURRED FROM THE ICE
TODAY...AND ADDITIONAL POWER OUTAGES ARE LIKELY TONIGHT. BE
EXTREMELY CAREFUL BECAUSE OF THE RISK OF FIRE. IF POSSIBLE USE
FLASHLIGHTS...NOT CANDLES...FOR LIGHT.

$$
DLF/BRP

What forecasters said that day

The local office's own words before this ice 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 ice storm warning went out at Feb 24, 3:15 AM CST, 8 hours 16 minutes earlier.

Area forecast discussion, Feb 24, 3:15 AM CST, 8 hours 16 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
315 AM CST SAT FEB 24 2007

.DISCUSSION...

...INTENSE AND EXTREME WINTER STORM TO IMPACT AREA NEXT 24-36
HOURS...

WILL TEND TO BE CONCISE DUE TO STRENGTH AND COMPLEXITY OF SYSTEM. KEY
IS HIGH CONFIDENCE ON WHAT WILL HAPPEN WITH ONLY QUESTION TRANSITION
ZONES FROM SNOW...SLEET...FREEZING RAIN...RAIN...ROUGHLY 20-30 NM
EITHER WAY AS SYSTEM DEVELOPS. FOR MORE SPECIFICS ON METEOROLOGY
ISSUES PLEASE REVIEW LAST NIGHT/S FORECAST DISCUSSION...CHIAFDDVN AS
ALL STILL APPLY. EVAPORATIVE COOLING WILL TRANSITION INTENSE FORCING
OF RAIN TO SLEET AND THEN SNOW NORTH OF HIGHWAY 34. VERY STRONG EAST
WINDS OF 25 TO 40 MPH WITH ISOLATED GUSTS TO 50+ MPH TODAY INTO THIS
EVENING...ESPECIALLY ALONG AND NORTH OF I-80. STILL MOST AREAS TO
RECEIVE 1 TO 2 INCHES OF PRECIPITATION TO KEEP FLOOD WATCH NOW IN
EFFECT GOING.

ONE ITEM NOT INCLUDED IN FORECAST IS ISOLATED THUNDER DUE TO INTENSE
UVVS.  REASON LEFT OUT IS MAKES FORECAST TOO COMPLEX AND SECONDARY
TO WINTER WEATHER SITUATION.

HIGHWAY 20 CORRIDOR...WENT 12 TO 15 INCHES OF SNOW WITH WHITEOUT
CONDITIONS BY PM WITH WINDS.  THUS WENT WITH BLIZZARD WARNING.
COULD SEE INITIALLY A TENTH OF AN INCH OF FREEZING RAIN AND SLEET
BEFORE TRANSITION.

HIGHWAY 30 CORRIDOR...ICE UP TO A QUARTER INCH WITH SNOW AMOUNTS
OF 8 TO 12 INCHES WITH AGAIN NEAR WHITEOUT CONDITIONS TO WHITEOUT
CONDITIONS LATE PM.  WENT WINTER STORM WARNING EXCEPT NEAR CID WHERE
INCLUDED IN BLIZZARD WARNING.  THIS ENTIRE AREA MAY NEED UPGRADING
TO BLIZZARD WARNING LATER TODAY.

ALONG I-80...MAJOR ICE OF QUARTER TO HALF INCH OF FREEZING RAIN AND
SLEET CHANGING TO SNOW LATE PM INTO EVENING HOURS.  SNOW AMOUNTS TO
VARY FROM 3 TO 8 INCHES DUE TO CONVECTIVE NATURE...MAINLY HIGHER
NORTH OF I-80 AND LOWER SOUTH OF I-80. STRONG WINDS MAY CAUSE
SIGNIFICANT POWER OUTAGES. WENT WITH WINTER STORM WARNING.

HIGHWAY 92...SIGOURNEY TO MONMOUTH...MAJOR ICE EVENT WITH HALF INCH
OR MORE OF FREEZING RAIN AND SLEET WITH PERIODS OF SNOW MIXED IN.
SNOW AMOUNTS OF 1 TO 3 INCHES.  STRONG WINDS MAY CAUSE SIGNIFICANT
POWER OUTAGES. WENT WITH WINTER STORM WARNING.

ALONG AND SOUTH OF HIGHWAY 34...WINTER WEATHER ADVISORY FOR RAIN AND
FREEZING RAIN AND SLEET TODAY INTO EARLY THIS EVENING.

FIVE SEGMENTS...FOUR WARNINGS...BLIZZARD WARNING ALONG HIGHWAY 20...
THREE WINTER STORM WARNINGS TIERED BASED ON SNOW/ICE DISTRIBUTION
AND WINTER WEATHER ADVISORY FAR SOUTH.

WILL EMPHASIZE GRAVITY AND STRENGTH OF WINTER WEATHER IN WSW
PRODUCTS.

MINOR CHANGES MADE BEYOND SUNDAY NIGHT DUE TO STRENGTH OF SYSTEM.

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...BLIZZARD WARNING IN EFFECT ALONG HIGHWAY 20 UNTIL 6 AM
SUNDAY. WINTER STORM WARNING IN EFFECT FOR HIGHWAY 30 TO HIGHWAY
34 UNTIL 6 PM SUNDAY. WINTER WEATHER ADVISORY IN EFFECT SOUTH OF
HIGHWAY 34 UNTIL MIDNIGHT.
IL...BLIZZARD WARNING IN EFFECT ALONG HIGHWAY 20 UNTIL 6 AM
SUNDAY. WINTER STORM WARNING IN EFFECT FOR HIGHWAY 30 TO HIGHWAY
34 UNTIL 6 PM SUNDAY. WINTER WEATHER ADVISORY IN EFFECT SOUTH OF
HIGHWAY 34 UNTIL MIDNIGHT.
MO...WINTER WEATHER ADVISORY IN EFFECT SOUTH OF HIGHWAY 34 UNTIL
MIDNIGHT.

&&

NICHOLS
Hazardous weather outlook, Feb 24, 5:20 AM CST, 6 hours 11 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
520 AM CST SAT FEB 24 2007

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-009
-015>018-024>026-034-035-MOZ009-010-251100-
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-
525 AM CST SAT FEB 24 2007

...POWERFUL...POTENTIALLY CRIPPLING AND DANGEROUS WINTER STORM TODAY
INTO SUNDAY...

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

A VERY INTENSE STORM SYSTEM IN THE CENTRAL PLAINS WILL LIFT
NORTHEAST ACROSS KANSAS...MISSOURI INTO NORTHERN ILLINOIS TODAY
AND TONIGHT...SEVERELY IMPACTING THE AREA WITH VERY HIGH SNOW AND
ICE ACCUMULATIONS COMBINED WITH STRONG WINDS.

FREEZING RAIN AND SLEET WILL OVERSPREAD THE AREA AS THE DAY
PROGRESSES...WITH THIS WINTRY MIXTURE SWITCHING OVER TO SNOW THIS
AFTERNOON AND ESPECIALLY TONIGHT. SIGNIFICANT ICE ACCUMULATIONS OF A
QUARTER INCH...UP TO A HALF INCH ARE GENERALLY EXPECTED TODAY FROM A
CEDAR RAPIDS...TO STERLING LINE...DOWN TO THE INTERSTATE 80 CORRIDOR.
A HALF INCH OF ICE ACCUMULATION OR MORE IS EXPECTED FROM JUST SOUTH
OF THE INTERSTATE 80 CORRIDOR...DOWN TO A FAIRFIELD TO MONMOUTH
LINE. SOME SLEET ACCUMULATION WILL ALSO BE POSSIBLE. THIS EXTENT OF
ICING...COMBINED WITH STRONG EAST WINDS FROM 25 TO 35 MPH WITH GUSTS
UP TO 45 MPH...WILL LIKELY RESULT IN DOWNED TREE BRANCHES AND POWER
LINES.

THIS AFTERNOON AND TONIGHT...THE FREEZING RAIN AND SLEET TURNS TO
HEAVY SNOW...STRONG WINDS WILL PRODUCE BLIZZARD CONDITIONS ALONG AND
NORTH OF THE ROUTE 30 CORRIDOR. FALLING AND BLOWING SNOW WILL CREATE
WHITEOUT CONDITIONS WITH POOR VISIBILITIES OF ONE-QUARTER MILE OR
LESS. THESE VERY HAZARDOUS AND LIFE THREATENING CONDITIONS WILL LAST
WELL INTO SATURDAY NIGHT ACROSS NORTHEAST IOWA AND INTO FAR NORTHWEST
ILLINOIS. THE ROUTE 20 CORRIDOR CAN EXPECT 10 TO 16 INCHES OF SNOW
ACCUMULATION BY SUNDAY AFTERNOON.

SOME WHITEOUT AND NEAR BLIZZARD CONDITIONS WILL OCCUR DOWN TO THE
INTERSTATE 80 CORRIDOR BY TONIGHT. SIGNIFICANT SNOW ACCUMULATIONS OF
6 TO 12 INCHES ARE EXPECTED BY SUNDAY AFTERNOON ALONG AN AXIS FROM
IOWA CITY...TO CLINTON AND STERLING. SNOW ACCUMULATIONS OF 3 TO 7
INCHES ARE EXPECTED BY SUNDAY AFTERNOON ALONG AND SOUTH OF THE
INTERSTATE 80 CORRIDOR...DOWN TO A FAIRFIELD TO MONMOUTH LINE.

SOUTH OF A FAIRFIELD...TO MONMOUTH LINE...FREEZING RAIN WITH ICE
ACCUMULATION UP TO A TENTH OF AN INCH TODAY MAY CAUSE SOME SLICK
SPOTS AND HAZARDOUS TRAVEL. FAR SOUTHEAST IOWA...NORTHEAST MISSOURI
AND PORTIONS OF WEST CENTRAL ILLINOIS MAY RECEIVE UP TO AN INCH OF
SNOW TONIGHT. A WINTER WEATHER ADVISORY IS IN EFFECT FOR THESE AREAS
FOR TODAY FOR THE FREEZING RAIN...SLEET AND LIGHT ICE ACCUMULATIONS.

A BLIZZARD WARNING IS IN EFFECT FOR THE HIGHWAY 20 CORRIDOR TODAY AND
TONIGHT. A WINTER STORM WARNING IS IN EFFECT TODAY THROUGH SUNDAY
FOR ICE AND SNOW ACCUMULATIONS COMBINED WITH STRONG WINDS...ROUGHLY
FROM MARENGO TO STERLING...THEN EXTENDING SOUTHWARD TO A FAIRFIELD TO
MONMOUTH LINE. SEE LOCAL WINTER WEATHER PRODUCTS FOR FURTHER
INFORMATION.

WIDESPREAD ONE TO TWO INCH LIQUID AMOUNTS FALLING ON PARTIALLY FROZEN
GROUND PLUS THICK ICE ON AREA RIVERS WILL CREATE A SITUATION
FAVORABLE FOR FLOODING AND POSSIBLY FLASH FLOODING. A FLOOD WATCH IS
IN EFFECT FROM JUST NORTH OF THE INTERSTATE 80 CORRIDOR...THEN
EXTENDING SOUTH ACROSS THE REST OF SOUTHEAST IOWA...NORTHEAST
MISSOURI AND WEST CENTRAL ILLINOIS. INDIVIDUALS SHOULD MONITOR THIS
SITUATION FOR FURTHER UPDATES.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT.  ANY ICE AND
SNOW REPORTS THIS WEEKEND DURING THE EVENT WOULD BE APPRECIATED.

12/NICHOLS

In the hours before

Local storm report, Feb 24, 8:58 AM CST, 2 hours 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
858 AM CST SAT FEB 24 2007

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

0851 AM     ICE STORM        WHAT CHEER              41.40N 92.35W
02/24/2007                   KEOKUK             IA   TRAINED SPOTTER

            1/4 INCH ICE ACCUMULATION ON TREES AND ROADS. TEMPERATURE
            29 DEGREES. LIGHT FREEZING RAIN CURRENTLY.

&&

JH2
Local storm report, Feb 24, 9:35 AM CST, 1 hour 56 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
935 AM CST SAT FEB 24 2007

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

0910 AM     ICE STORM        BELLE PLAINE            41.90N 92.27W
02/24/2007                   BENTON             IA   TRAINED SPOTTER

            0.4 INCH ICE ACCUMULATION ON ALL EXPOSED SURFACES. WHOLE
            TREE HAS FALLEN OVER IN SPOTTERS BACK YARD DUE TO WEIGHT
            OF ICE AND STRONG WINDS. TREE WAS ROTTED. HEAVY FREEZING
            RAIN CURRENTLY FALLING. TEMPERATURE 28 DEGREES.

0915 AM     ICE STORM        FORT MADISON            40.62N 91.35W
02/24/2007                   LEE                IA   TRAINED SPOTTER

            1/4 INCH ICE ACCUMULATION. SMALLER TREE BRANCHES
            BEGINNING TO SAG FROM WEIGHT OF ICE. HEAVY FREEZING RAIN
            CURRENTLY FALLING. TEMPERATURE 30 DEGREES.

0915 AM     FREEZING RAIN    2 W RUTLEDGE            40.31N 92.13W
02/24/2007  M0.10 INCH       SCOTLAND           MO   TRAINED SPOTTER

            1/10TH INCH ICE ACCUMULATION ON TREES. NO ICE ON ROADS
            AND SIDEWALKS. LIGHT TO MODERATE FREEZING RAIN CURRENTLY
            FALLING. TEMPERATURE 31.5 DEGREES.

0915 AM     FREEZING RAIN    DONNELLSON              40.64N 91.56W
02/24/2007  M0.13 INCH       LEE                IA   TRAINED SPOTTER

            1/8 INCH ICE ACCUMULATION. TEMPERATURE 32 DEGREES.

&&

JH2
Local storm report, Feb 24, 10:01 AM CST, 1 hour 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1001 AM CST SAT FEB 24 2007

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

0940 AM     FREEZING RAIN    NAUVOO                  40.55N 91.38W
02/24/2007  M0.20 INCH       HANCOCK            IL   TRAINED SPOTTER

            JUST UNDER 1/4 INCH ICE ACCUMULATION ON EXPOSED SURFACES.
            FREEZING RAIN MIXED WITH SLEET CURRENTLY. TEMPERATURE 32
            DEGREES.

0952 AM     FREEZING RAIN    2 N MACOMB              40.50N 90.68W
02/24/2007  M0.20 INCH       MCDONOUGH          IL   TRAINED SPOTTER

            JUST UNDER 1/4 INCH ICE ACCUMULATION ON EXPOSED SURFACES.
            FREEZING RAIN AND SLEET CURRENTLY FALLING. TEMPERATURE
            30.3 DEGREES.

&&

JH2
Local storm report, Feb 24, 10:23 AM CST, 1 hour 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1023 AM CST SAT FEB 24 2007

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

1000 AM     FREEZING RAIN    CEDAR RAPIDS            41.97N 91.67W
02/24/2007  E0.13 INCH       LINN               IA   TRAINED SPOTTER

            1/8 INCH ICE COATING IN SOUTHEAST PART OF TOWN.

&&

14
Local storm report, Feb 24, 10:24 AM CST, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1024 AM CST SAT FEB 24 2007

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

1020 AM     FREEZING RAIN    5 S FAIRFIELD           40.93N 91.97W
02/24/2007  M0.13 INCH       JEFFERSON          IA   TRAINED SPOTTER

            1/8 INCH ICE ACCUMULATION ON ALL EXPOSED SURFACES. HEAVY
            FREEZING RAIN CURRENTLY FALLING.

&&

JH2
Local storm report, Feb 24, 10:39 AM CST, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1039 AM CST SAT FEB 24 2007

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

1038 AM     FREEZING RAIN    1 W INDUSTRY            40.33N 90.63W
02/24/2007  M0.13 INCH       MCDONOUGH          IL   TRAINED SPOTTER

            1/8 INCH ICE ACCUMULATION ON EXPOSED SURFACES. JUST
            BEGINNING TO MELT SOMEWHAT.

&&

JH2

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 23, 6:16 PM CSTWinter Weather AdvisoryDVNJo Daviess, Stephenson8 hr
Feb 24, 4:20 AM CSTBlizzard WarningDVNCarroll, Jo Daviess, Stephenson26 hr
Feb 24, 4:20 AM CSTWinter Storm WarningDVNBureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more30 hr
Feb 24, 4:20 AM CSTWinter Weather AdvisoryDVNHancock, McDonough12 hr

Nearby

Ice Storm Warnings in Iowa, 2007Ice Storm Warnings in Illinois, 2007Every ice storm warning in 2007

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.