Alert archive / Illinois / Winter Storm Warnings in 2008

Winter Storm Warning 3, NWS Chicago, IL

February 5, 200812 counties in Illinois; Lake County, Porter County, Indiana

NWS Chicago, IL issued this winter storm warning at Feb 5, 2008, 4:27 AM CST for 12 counties in Illinois; Lake County, Porter County, Indiana. It took effect at Feb 5, 2008, 4:00 PM CST. It was in force for 30 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 5, 2008, 4:27 AM CST (10:27 UTC)
In effect from
Feb 5, 2008, 4:00 PM CST
Expired
Feb 6, 2008, 10:00 PM CST
In force
30 hr
Issued by
NWS Chicago, IL

Counties Boone County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Winnebago County, IL, Lake County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 42 km from the middle of the area, began a volume at 10:30 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

Davenport, (KDVN), launched 00:00Z, 10.5 hours before the alert went out and 172 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 2008-02-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 2008-02-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.1939587897117136Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
441 m above ground
0-6 km bulk shear
87 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
111 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 Chicago, IL wrote its last area forecast discussion before this winter storm warning went out at Feb 5, 3:38 AM CST, 49 minutes earlier.

Area forecast discussion, Feb 5, 3:38 AM CST, 49 minutes before
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Hazardous weather outlook, Feb 4, 7:18 PM CST, 9 hours 9 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
718 PM CST MON FEB 4 2008

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
060130-
WINNEBAGO-BOONE-MCHENRY-LAKE ILLINOIS-OGLE-LEE-DE KALB-KANE-
DUPAGE-COOK-LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-
IROQUOIS-FORD-LAKE INDIANA-PORTER-NEWTON-JASPER-BENTON-
718 PM CST MON FEB 4 2008 /818 PM EST MON FEB 4 2008/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHEAST ILLINOIS AND NORTHWEST INDIANA.

.DAY ONE...TONIGHT.

WIDESPREAD DENSE TO VERY DENSE FOG WILL PERSIST ACROSS THE AREA
THIS EVENING. SOME IMPROVEMENT WILL OCCUR IN NORTH CENTRAL
ILLINOIS AFTER MIDNIGHT WITH THE FOG THINNING A BIT. THIS
IMPROVING TREND WILL SPREAD SOUTHEASTWARD ACROSS THE REST OF THE
AREA DURING THE OVERNIGHT AND PRE DAWN HOURS.

THERE WILL BE ISOLATED TO SCATTERED THUNDERSTORMS THIS EVENING
SOUTH OF A STREATOR TO MICHIGAN CITY LINE. SOME OF THESE
THUNDERSTORMS MAY PRODUCE HAIL AND GUSTY WINDS.

LOCALIZED ICE JAM FLOODING WILL CONTINUE ALONG PORTIONS OF THE
ROCK AND KANKAKEE RIVERS. CONTINUED SNOW MELT ACROSS THE AREA...
AS WELL AS MORE RAIN IN EAST CENTRAL ILLINOIS INTO NORTHWEST
INDIANA MAY LEAD TO RISES ON AREA RIVERS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

RAIN WILL SPREAD FROM SOUTH TO NORTH TUESDAY WITH THE RAIN MIXING
WITH SNOW IN NORTH CENTRAL AND NORTHEAST ILLINOIS. THE
PRECIPITATION WILL CHANGE TO ALL SNOW FROM NORTHWEST TO SOUTHEAST
TUESDAY NIGHT. SNOW WILL PERSIST INTO WEDNESDAY MORNING BEFORE
DIMINISHING DURING THE AFTERNOON. SNOWFALL TOTALS OF 4 TO
8 INCHES
ARE POSSIBLE ACROSS NORTH CENTRAL AND FAR NORTHEAST ILLINOIS BY
MID AFTERNOON WEDNESDAY.

THERE IS A CHANCE OF MORE SNOW ON THURSDAY.

LOCALIZED ICE JAM FLOODING IS LIKELY TO CONTINUE ALONG PORTIONS
OF
THE ROCK AND KANKAKEE RIVERS. CONTINUED RUNOFF FROM SNOW MELT AND
RAINFALL WILL LIKELY LEAD TO ADDITIONAL RISES ON RIVERS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS REPORTS OF SEVERE WEATHER THIS EVENING ARE REQUESTED.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ740>745-060130-
WINTHROP HARBOR TO WILMETTE HARBOR-
WILMETTE HARBOR TO NORTHERLY ISLAND-
NORTHERLY ISLAND TO CALUMET HARBOR-CALUMET HARBOR TO GARY-
GARY TO BURNS HARBOR-BURNS HARBOR TO MICHIGAN CITY-
718 PM CST MON FEB 4 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE ILLINOIS
NEARSHORE WATERS OF LAKE MICHIGAN AND THE INDIANA NEARSHORE
WATERS OF LAKE MICHIGAN.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

GALE FORCE WINDS ARE EXPECTED LATE TUESDAY NIGHT AND WEDNESDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-060130-
LAKE MICHIGAN FROM MICHIGAN CITY IN TO ST. JOSEPH MI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN SOUTH OF A LINE FROM SEUL CHOIX POINT TO THE
MACKINAC BRIDGE AND NORTH OF A LINE FROM CHARLEVOIX MI TO SOUTH
FOX ISLAND 5 NM OFFSHORE-
LAKE MICHIGAN FROM CHARLEVOIX TO POINT BETSIE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM POINT BETSIE TO MANISTEE MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO STURGEON BAY WI-
LAKE MICHIGAN FROM STURGEON BAY TO TWO RIVERS WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM TOW RIVERS TO SHEBOYGAN WI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM SHEBOYGAN TO PORT WASHINGTON WI 5 NM OFFSHORE
TO MID LAKE-
LAKE MICHIGAN FROM PORT WASHINGTON TO NORTH POINT LIGHT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM NORTH POINT LIGHT TO WIND POINT WI 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WIND POINT WI TO WINTHROP HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WINTHROP HARBOR TO WILMETTE HARBOR IL 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM WILMETTE HARBOR IL TO MICHIGAN CITY IN 5 NM
OFFSHORE TO MID LAKE-
LAKE MICHIGAN FROM PENTWATER TO MANISTEE MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM WHITEHALL TO PENTWATER MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM GRAND HAVEN TO WHITEHALL MI 5 NM OFFSHORE TO
MID LAKE-
LAKE MICHIGAN FROM HOLLAND TO GRAND HAVEN MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM SOUTH HAVEN TO HOLLAND MI 5 NM OFFSHORE TO MID
LAKE-
LAKE MICHIGAN FROM ST. JOSEPH TO SOUTH HAVEN MI 5 NM OFFSHORE TO
MID LAKE-
718 PM CST MON FEB 4 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE OPEN WATERS
OF LAKE MICHIGAN.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

GALE FORCE WINDS ARE EXPECTED SOUTH OF A TWO RIVERS TO MANISTEE
LINE LATE TUESDAY NIGHT AND WEDNESDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO
WEBPAGE: WEATHER.GOV/CHICAGO

TRS

In the hours before

Local storm report, Feb 5, 12:06 AM CST, 4 hours 21 minutes before
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Local storm report, Feb 5, 12:19 AM CST, 4 hours 8 minutes before
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The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 4, 8:16 PM CSTRiver Flood WarningLOTIroquois10 days
Feb 4, 8:18 PM CSTFlash Flood WatchLOTFord, Iroquois, Kankakee, Livingston4 hr
Feb 4, 8:44 PM CSTRiver Flood WarningLOTBureau, LaSalle21 days
Feb 4, 11:51 PM CSTFlash Flood WarningLOTFord, Iroquois, Kankakee, Livingston18 hr
Feb 5, 4:27 AM CSTWinter Weather AdvisoryLOTGrundy, Kankakee, Kendall, LaSalle, Livingston38 hr
Feb 5, 9:18 AM CSTRiver Flood WarningLOTIroquois, Kankakee6 days
Feb 5, 9:18 AM CSTRiver Flood WarningLOTKankakee6 days
Feb 5, 9:18 AM CSTRiver Flood WarningLOTLaSalle3 days
Feb 5, 10:41 AM CSTRiver Flood WarningLOTGrundy66 hr
Feb 5, 11:15 AM CSTFlood WatchLOTFord, Grundy, Iroquois, Kankakee, LaSalle, Livingston26 hr
Feb 4, 8:16 PM CSTRiver Flood WarningLOTPorter21 days
Feb 4, 8:16 PM CSTRiver Flood WarningLOTJasper, Porter21 days

Nearby

Winter Storm Warnings in Illinois, 2008Winter Storm Warnings in Indiana, 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.