Alert archive / Illinois / Flash Flood Warnings in 1996

Flash Flood Warning 2, NWS Chicago, IL

May 28, 1996Ogle County, Winnebago County, Illinois

NWS Chicago, IL issued this flash flood warning at May 28, 1996, 11:14 AM CDT for Ogle County, Winnebago County, 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
May 28, 1996, 11:14 AM CDT (16:14 UTC)
Expired
May 28, 1996, 3:15 PM CDT
In force
4 hr
Issued by
NWS Chicago, IL
Area
Whole counties

Counties Ogle County, IL, Winnebago County, IL

The radar

The Milwaukee radar (KMKX), 103 km from the middle of the area, began a volume at 16:15 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 12:00Z, 4.2 hours before the alert went out and 122 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 1996-05-28Temperature 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, Davenport, at 12:00Z on 1996-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.1939Sfc1 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
531 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
132 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 
TTAA00 KCHI 281619
FFWCHI
ILC141-201-282015-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHICAGO IL
1114 AM CDT TUE MAY 28 1996
 
THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  315 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH CENTRAL ILLINOIS
 
   ...OGLE COUNTY...WINNEBAGO COUNTY
 
AT 1110 AM NATIONAL WEATHER SERVICE RADAR WAS SHOWING A LARGE AREA OF
RAIN OVER NORTH CENTRAL ILLINOIS. THE ROCKFORD AIRPORT HAD RECEIVED OVER
3.3 INCHES OF RAIN BETWEEN 700 AND 1100 AM. RADAR ESTIMATES EVEN MORE
RAIN HAS FALLEN JUST TO THE EAST OF THE AIRPORT. SOME OF THE COMMUNITIES
RECEIVING THE MOST RAIN WERE CHERRY VALLEY...NEW MILFORD... MONROE
CENTER...AND DAVIS JUNCTION. HEAVY RAIN WILL CONTINUE ACROSS
WINNEBAGO AND OGLE COUNTIES THROUGH 100 PM. MANY STREETS AND STREAMS
WERE ALREADY FLOODED IN SOUTHEAST WINNEBAGO AND NORTHEAST OGLE COUNTIES.
THE ADDITIONAL RAINS INTO EARLY AFTERNOON WILL CAUSE THE FLOOD WATERS TO
CONTINUE TO RISE.
 
DON'T DRIVE ACROSS FLOODED ROADS!  MOST FLASH FLOOD DEATHS OCCUR
IN VEHICLES.
 
IF YOU LIVE NEAR A STREAM...MOVE TO HIGHER GROUND.
 
 
TAYLOR

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 28, 5:46 AM CDT, 5 hours 28 minutes before
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-281600-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO IL
600 AM CDT TUE MAY 28 1996

THIS OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN NORTHERN ILLINOIS:

BOONE-COOK-DE KALB-DU PAGE-FORD-GRUNDY-IROQUOIS-KANE-KANKAKEE-
KENDALL-LA SALLE-LAKE-LEE-LIVINGSTON-MCHENRY-OGLE-WILL-WINNEBAGO-

AND LAKE COUNTY IN INDIANA

INCLUDING THE CITIES OF AURORA...BELVIDERE...CHICAGO...DE KALB...
DIXON...GARY IN...JOLIET...KANKAKEE...MORRIS...OTTAWA...PONTIAC...
ROCHELLE...ROCKFORD...WATSEKA...WAUKEGAN...WHEATON...WOODSTOCK

NO SEVERE THUNDERSTORMS ARE EXPECTED IN THE AREA TODAY OR TONIGHT.
RDM
Special weather statement, May 28, 10:54 AM CDT, 20 minutes before
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-291100-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO IL
1100 AM CDT TUE MAY 28 1996

THIS OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN NORTHERN ILLINOIS:

BOONE-COOK-DE KALB-DU PAGE-FORD-GRUNDY-IROQUOIS-KANE-KANKAKEE-
KENDALL-LA SALLE-LAKE-LEE-LIVINGSTON-MCHENRY-OGLE-WILL-WINNEBAGO-

AND LAKE COUNTY IN INDIANA

INCLUDING THE CITIES OF AURORA...BELVIDERE...CHICAGO...DE KALB...
DIXON...GARY IN...JOLIET...KANKAKEE...MORRIS...OTTAWA...PONTIAC...
ROCHELLE...ROCKFORD...WATSEKA...WAUKEGAN...WHEATON...WOODSTOCK

THUNDERSTORMS WILL BE SCATTERED ACROSS THE ENTIRE AREA THIS AFTERNOON
AND DIMINISHING TONIGHT. THERE IS A SLIGHT RISK THAT SOME THUNDERSTORMS
IN FORD...LIVINGSTON...AND IROQUOIS COUNTIES IN ILLINOIS MAY BECOME
SEVERE THIS AFTERNOON.

BRUMER

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 3:05 PM CDTFlash Flood WarningLOTOgle, Winnebago3 hr
May 28, 6:00 PM CDTFlash Flood WarningLOTOgle, Winnebago4 hr

Nearby

Flash Flood Warnings in Illinois, 1996Every flash flood warning in 1996

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.