Alert archive / Iowa / Winter Storm Warnings in 2008

Winter Storm Warning 1, NWS Quad Cities, IA

February 3, 20088 counties in Iowa; 6 counties in Illinois

NWS Quad Cities, IA issued this winter storm warning at Feb 3, 2008, 4:56 PM CST for 8 counties in Iowa; 6 counties in Illinois. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Feb 3, 2008, 4:56 PM CST (22:56 UTC)
Expired
Feb 3, 2008, 8:29 PM CST
In force
4 hr
Issued by
NWS Quad Cities, IA

Counties Cedar County, IA, Clinton County, IA, Johnson County, IA, Keokuk County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Washington County, IA, Bureau County, IL, Henry County, IL, Mercer County, IL, Putnam County, IL, Rock Island County, IL, Whiteside County, IL

The radar

The Quad Cities radar (KDVN), 19 km from the middle of the area, began a volume at 22:57 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.9 hours before the alert went out and 233 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, Lincoln, IL at 12:00Z on 2008-02-03Temperature 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, Lincoln, IL at 12:00Z on 2008-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -57 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
759 m above ground
0-6 km bulk shear
85 kt
0-1 km storm-relative helicity
-57 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 3, 3:20 PM CST, 1 hour 36 minutes earlier.

Area forecast discussion, Feb 3, 3:20 PM CST, 1 hour 36 minutes before
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Hazardous weather outlook, Feb 3, 5:00 AM CST, 11 hours 56 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
500 AM CST SUN FEB 3 2008

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-041100-
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-
500 AM CST SUN FEB 3 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

DENSE FREEZING FOG WILL BE SEEN THROUGH MID MORNING SOUTH OF AN
OSKALOOSA IOWA TO GALESBURG ILLINOIS LINE. LIGHT ICE ACCUMULATIONS
ARE LIKELY ON EXPOSED SURFACES.

LATE THIS AFTERNOON AND TONIGHT...SNOW WILL DEVELOP ACROSS THE AREA
AND BECOME MIXED WITH SLEET AND FREEZING RAIN DURING THE EVENING
HOURS. SNOW ACCUMULATIONS OF UP TO AN INCH ARE POSSIBLE ALONG WITH
A LIGHT COATING OF ICE. THE PRECIPITATION MAY CHANGE OVER TO ALL RAIN
OR DRIZZLE ALONG AND SOUTH OF HIGHWAY 34 LATE TONIGHT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A STRONG AND COMPLEX STORM SYSTEM WILL BRING A VARIETY OF
PRECIPITATION TO THE AREA INTO TUESDAY. RAIN IS EXPECTED TO DEVELOP
MONDAY...WITH TEMPERATURES COLD ENOUGH NORTH OF INTERSTATE 80 FOR
FREEZING RAIN OR SLEET MONDAY MORNING. RAIN IS POSSIBLE THROUGH
MONDAY EVENING...WITH ISOLATED THUNDERSTORMS NOT OUT OF THE
QUESTION. COLDER AIR WILL MOVE INTO THE REGION LATE MONDAY NIGHT AND
TUESDAY CHANGING THE RAIN TO SNOW FROM WEST TO EAST. SOME LIGHT
ACCUMULATIONS OF SNOW IS POSSIBLE.

THIS STORM HAS THE POTENTIAL TO CAUSE SIGNIFICANT TRAVEL PROBLEMS
FOR THE EARLY PART OF THE WORK WEEK. INTERESTED INDIVIDUALS SHOULD
MONITOR FORECASTS AND STATEMENTS FOR UPDATES CONCERNING THIS
STORM.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT.

In the hours before

Local storm report, Feb 3, 4:39 PM CST, 17 minutes before
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Local storm report, Feb 3, 4:40 PM CST, 16 minutes before
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Local storm report, Feb 3, 4:42 PM CST, 14 minutes before
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Local storm report, Feb 3, 4:44 PM CST, 12 minutes before
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Local storm report, Feb 3, 4:47 PM CST, 9 minutes before
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Local storm report, Feb 3, 4:48 PM CST, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 3, 3:44 AM CSTFreezing Fog AdvisoryDVNDes Moines, Henry, Jefferson, Lee, Van Buren7 hr
Feb 3, 12:53 PM CSTWinter Weather AdvisoryDVNCedar, Clinton, Des Moines, Henry, Jackson, Jefferson and 8 more8 hr

Nearby

Winter Storm Warnings in Iowa, 2008Winter Storm Warnings in Illinois, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.