Alert archive / Indiana / Flood Watches in 2011

Flood Watch 3, NWS Chicago, IL

November 28, 2011Iroquois County, Illinois; 5 counties in Indiana

NWS Chicago, IL issued this flood watch at Nov 28, 2011, 12:23 PM CST for Iroquois County, Illinois; 5 counties in Indiana. It took effect at Nov 29, 2011, 12:00 AM CST. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Nov 28, 2011, 12:23 PM CST (18:23 UTC)
In effect from
Nov 29, 2011, 12:00 AM CST
Expired
Nov 29, 2011, 3:15 PM CST
In force
15 hr
Issued by
NWS Chicago, IL
Flood severity
None

Counties Iroquois County, IL, Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 6.4 hours before the alert went out and 146 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 2011-11-28Temperature 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 2011-11-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.193958Sfc1 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
645 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
-38 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 flood watch 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 flood watch went out at Nov 28, 11:51 AM CST, 32 minutes earlier.

Area forecast discussion, Nov 28, 11:51 AM CST, 32 minutes before
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Hazardous weather outlook, Nov 28, 4:38 AM CST, 7 hours 45 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
438 AM CST MON NOV 28 2011

ILZ003>006-008-010>014-019>023-032-033-039-INZ001-002-010-011-019-
291045-
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-
438 AM CST MON NOV 28 2011 /538 AM EST MON NOV 28 2011/

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

.DAY ONE...TODAY AND TONIGHT.

PERIODS OF MODERATE TO HEAVY RAIN WILL DEVELOP LATE TONIGHT
ACROSS PORTIONS OF NORTHWESTERN INDIANA AND EAST CENTRAL ILLINOIS.

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

NORTH TO NORTHEAST WINDS WILL GUST TO AROUND 40 MPH TUESDAY...
WITH GUSTS OVER 50 MPH POSSIBLE NEAR LAKE MICHIGAN. LARGE AND
BATTERING WAVES ALONG THE LAKE COULD LEAD TO SOME MINOR LAKE SHORE
FLOODING TUESDAY INTO TUESDAY NIGHT.

PERIODS OF MODERATE TO HEAVY RAINFALL WILL CONTINUE ON TUESDAY
ACROSS PORTIONS OF NORTHWESTERN INDIANA AND THE ADJACENT EAST
CENTRAL COUNTIES IN ILLINOIS. RAINFALL AMOUNTS IN EXCESS OF AN
INCH ARE POSSIBLE ACROSS THESE AREAS. IN ADDITION...THERE IS THE
POTENTIAL THAT THIS RAINFALL COULD CHANGE OVER TO A PERIOD OF
MODERATE TO HEAVY SNOW LATE TUESDAY AFTERNOON AND EVENING AS
COLDER AIR MOVES ACROSS THE REGION. ALTHOUGH UNCERTAINTY REMAINS
HIGH WITH THIS POTENTIAL TRANSITION FROM RAIN TO SNOW...THERE COULD
BE SOME ACCUMULATING SNOW LATE TUESDAY AND TUESDAY EVENING THAT
COULD LEAD TO SOME HAZARDOUS TRAVEL CONDITIONS. AT THIS TIME...IT
APPEARS THE MAIN THREAT FOR SOME ACCUMULATING SNOW WOULD BE SOUTH
OF INTERSTATE 80 AND EAST OF INTERSTATE 57.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NECESSARY THROUGH TONIGHT.

&&

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

LMZ740>745-291045-
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-
438 AM CST MON NOV 28 2011

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

.DAY ONE...TODAY AND TONIGHT.

STRONG WINDS AND HIGH WAVES WILL LEAD TO HAZARDOUS CONDITIONS FOR
SMALL CRAFT.

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

GALE FORCE WINDS ARE FORECAST TUESDAY THROUGH WEDNESDAY MORNING.
A FEW STORM FORCE GUST ARE ALSO POSSIBLE ON TUESDAY. WAVES
HAZARDOUS TO SMALL CRAFT WILL LINGER THROUGH WEDNESDAY EVENING.

&&

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-
870-872-874-876-878-291045-
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 TWO 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-
438 AM CST MON NOV 28 2011

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

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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

GALE FORCE WINDS ARE EXPECTED TUESDAY THROUGH WEDNESDAY MORNING.
STORM FORCE GUSTS ARE POSSIBLE OVER MAINLY SOUTHERN PORTIONS OF
THE LAKE TUESDAY INTO TUESDAY EVENING.

&&

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

KJB

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 28, 1:30 PM CSTWind AdvisoryLOTLake35 hr
Nov 28, 1:38 PM CSTLakeshore Flood AdvisoryLOTLake39 hr
Nov 28, 4:06 PM CSTGale WarningLOT35 hr

Nearby

Flood Watches in Indiana, 2011Flood Watches in Illinois, 2011Every flood watch in 2011

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.