Alert archive / Illinois / Flash Flood Warnings in 2006

Flash Flood Warning 22, NWS Chicago, IL

October 2, 2006Will County, Illinois

NWS Chicago, IL issued this flash flood warning at Oct 2, 2006, 6:15 PM CDT for Will County, Illinois. It was in force for 3 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: Oct 2, 2006, 6:15 PM CDT (23:15 UTC)
Expired: Oct 2, 2006, 9:15 PM CDT
In force: 3 hr
Issued by: NWS Chicago, IL
Area: Counties, with a storm outline in the text

County Will County, IL

The radar

The Chicago radar (KLOT), 20 km from the middle of the area, began a volume at 23:15 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.3 hours before the alert went out and 338 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 77 J/kg
Mixed-layer CIN: -625 J/kg
Mixed-layer LCL: 1114 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 98 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 flash flood 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 flash flood warning went out at Oct 2, 2:50 PM CDT, 3 hours 25 minutes earlier.

Area forecast discussion, Oct 2, 2:50 PM CDT, 3 hours 25 minutes before

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Hazardous weather outlook, Oct 2, 1:15 PM CDT, 5 hours before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
115 PM CDT MON OCT 2 2006

ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011-
019-022130-
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DU PAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
LAKE IN-PORTER-NEWTON-JASPER-BENTON-
115 PM CDT MON OCT 2 2006

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

.DAY ONE... THIS AFTERNOON AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS WILL OCCUR ACROSS THE OUTLOOK
AREA THIS AFTERNOON INTO THIS EVENING. THERE IS A SLIGHT RISK OF
SEVERE THUNDERSTORMS WITH THIS ACTIVITY WITH LARGE HAIL AND DAMAGING
WINDS BEING THE MAIN THREATS.

.DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS...ESPECIALLY TUESDAY
NIGHT AS A COLD FRONT APPROACHES THE AREA FROM THE NORTH.  THESE
STORMS MAY CONTINUE INTO WEDNESDAY...MAINLY SOUTH OF I-80.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AND EVENING.

&&

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

LMZ740>745-766-022130-
WINTHROP HARBOR IL TO MICHIGAN CITY IN-
LAKE MICHIGAN-
115 PM CDT MON OCT 2 2006

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

.DAY ONE... THIS AFTERNOON AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS WILL OCCUR ACROSS SOUTHERN LAKE
MICHIGAN THIS AFTERNOON INTO THIS EVENING. THERE IS A SLIGHT RISK OF
SEVERE THUNDERSTORMS WITH THIS ACTIVITY WITH LARGE HAIL AND DAMAGING
WINDS BEING THE MAIN THREATS.

A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE ILLINOIS NEARSHORE
WATERS OF SOUTHERN LAKE MICHIGAN THROUGH THIS AFTERNOON FOR
HAZARDOUS WAVES OF UP TO 5 FEET.

.DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS...ESPECIALLY TUESDAY
NIGHT AS A COLD FRONT APPROACHES FROM THE NORTH.

&&

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

In the hours before

Local storm report, Oct 2, 3:36 PM CDT, 2 hours 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
336 PM CDT MON OCT 02 2006

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

0334 PM     HAIL             GRIFFITH                41.52N 87.42W
10/02/2006  U0.88 INCH       LAKE               IN   TRAINED SPOTTER

            NICKEL SIZE HAIL IN GRIFFITH

&&

CGITRO

Local storm report, Oct 2, 3:44 PM CDT, 2 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
344 PM CDT MON OCT 02 2006

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

0200 PM     TSTM WND DMG     CREST HILL              41.57N 88.11W
10/02/2006                   WILL               IL   FIRE DEPT/RESCUE

            LARGE TREE TOP SNAPPED WITH NUMEROUS POWER POLES DOWN
            CAUSING DAMAGE TO A RESIDENTIAL STRUCTURES

&&

CGITRO

Local storm report, Oct 2, 3:47 PM CDT, 2 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
347 PM CDT MON OCT 02 2006

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

0125 PM     HAIL             AURORA                  41.77N 88.29W
10/02/2006  U0.88 INCH       KANE               IL   TRAINED SPOTTER

            NICKEL HAIL ON ROUTE 59 AND LIBERTY IN CITY OF AURORA

0126 PM     HAIL             NAPERVILLE              41.76N 88.15W
10/02/2006  M0.75 INCH       DUPAGE             IL   TRAINED SPOTTER

            PENNY SIZE HAIL IN NAPERVILLE

0130 PM     HAIL             NAPERVILLE              41.76N 88.15W
10/02/2006  U0.75 INCH       DUPAGE             IL   TRAINED SPOTTER

            PENNY SIZE HAIL AT THE INTERSECTION OF AURORA AND OGDEN
            AVENUES

0135 PM     HAIL             SOMONAUK                41.63N 88.68W
10/02/2006  U0.75 INCH       LA SALLE           IL   TRAINED SPOTTER

            PENNY SIZE HAIL IN THE LAKE HOLIDAY AREA

0145 PM     HAIL             ELMWOOD PARK            41.92N 87.82W
10/02/2006  U1.00 INCH       COOK               IL   PUBLIC

            HAIL TO THE SIZE OF QUARTERS REPORTED IN ELMWOOD PARK

0152 PM     HAIL             DARIEN                  41.75N 87.98W
10/02/2006  E0.88 INCH       DUPAGE             IL   TRAINED SPOTTER

            NICKEL SIZE HAIL IN DARIEN AT CASS AVE AND 75TH ST

0200 PM     TSTM WND DMG     CREST HILL              41.57N 88.11W
10/02/2006                   WILL               IL   FIRE DEPT/RESCUE

            LARGE TREE TOP SNAPPED WITH NUMEROUS POWER POLES DOWN
            CAUSING DAMAGE TO A RESIDENTIAL STRUCTURES

0200 PM     HAIL             WILLOW SPRINGS          41.73N 87.88W
10/02/2006  E1.00 INCH       COOK               IL   FIRE DEPT/RESCUE

            HAIL TO THE SIZE OF QUARTERS REPORTED IN WILLOW SPRINGS

0207 PM     HAIL             CHICAGO RIDGE           41.70N 87.78W
10/02/2006  E0.88 INCH       COOK               IL   LAW ENFORCEMENT

            NICKEL SIZE HAIL IN AND AROUND CHICAGO RIDGE

0213 PM     TSTM WND DMG     CREST HILL              41.57N 88.11W
10/02/2006                   WILL               IL   NWS EMPLOYEE

            GARAGE DOOR BLOWN IN AND DEBRIS FROM TREES SCATTERED
            THROUGHOUT AREA

0221 PM     TSTM WND DMG     SHOREWOOD               41.52N 88.20W
10/02/2006                   WILL               IL   TRAINED SPOTTER

            THREES DOWN AT INTERSTATE 55 AND ROUTE 53 IN SHOREWOOD

0223 PM     TSTM WND GST     JOLIET                  41.53N 88.12W
10/02/2006  E65.00 MPH       WILL               IL   NWS EMPLOYEE

            TREES AND FENCES DOWN AT ESSINGTON AND THEODORE IN JOLIET

0225 PM     HAIL             LOCKPORT                41.59N 88.05W
10/02/2006  U1.00 INCH       WILL               IL   PUBLIC

            QUARTER SIZE HAIL AT NEW AVE NEAR ARCHER AVE

0230 PM     TSTM WND DMG     JOLIET                  41.53N 88.12W
10/02/2006                   WILL               IL   TRAINED SPOTTER

            3 TO 4 INCH TREE LIMBS DOWN IN JOLIET

0244 PM     HAIL             4 S NAPERVILLE          41.70N 88.15W
10/02/2006  E0.88 INCH       WILL               IL   TRAINED SPOTTER

            NICKEL SIZE HAIL AT PLAINFIELD/NAPERVILLE RD AND 135TH ST

0245 PM     HAIL             ROMEOVILLE              41.65N 88.09W
10/02/2006  U1.00 INCH       WILL               IL   LAW ENFORCEMENT

            QUARTER SIZE HAIL AT I-55 AND WEBER RD

0304 PM     HAIL             MATTESON                41.51N 87.74W
10/02/2006  U0.75 INCH       COOK               IL   LAW ENFORCEMENT

            MATTESON POLICE REPORTING PENNY SIZE HAIL AT I-57 AND
            ROUTE 30

0310 PM     HAIL             LEMONT                  41.67N 87.99W
10/02/2006  U0.88 INCH       COOK               IL   TRAINED SPOTTER

            NICKEL SIZE HAIL AT 127TH AND NEW AVENUE

0311 PM     HAIL             LEMONT                  41.67N 87.99W
10/02/2006  U0.88 INCH       COOK               IL   TRAINED SPOTTER

            NICKEL SIZE HAIL AT 127TH AND STATE ST

0313 PM     HAIL             PLAINFIELD              41.62N 88.20W
10/02/2006  U0.88 INCH       WILL               IL   TRAINED SPOTTER

            NICKEL SIZE HAIL AT COUNTY LINE RD AND CATON FARM RD

0334 PM     HAIL             GRIFFITH                41.52N 87.42W
10/02/2006  U0.88 INCH       LAKE               IN   TRAINED SPOTTER

            NICKEL SIZE HAIL IN GRIFFITH

&&
FURTHER UPDATES WILL BE ADDED AS NEW REPORTS ARE RECEIVED

CGITRO

Local storm report, Oct 2, 4:18 PM CDT, 1 hour 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
418 PM CDT MON OCT 02 2006

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

0405 PM     HAIL             5 N VALPARAISO          41.55N 87.05W
10/02/2006  U0.75 INCH       PORTER             IN   FIRE DEPT/RESCUE

            PENNY SIZED HAIL FROM VALPARAISO FIRE DEPT

&&

CGITRO

Local storm report, Oct 2, 4:34 PM CDT, 1 hour 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
434 PM CDT MON OCT 02 2006

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

0213 PM     TSTM WND DMG     JOLIET                  41.53N 88.12W
10/02/2006                   WILL               IL   NWS EMPLOYEE

            NUMEROUS TREES AND LIMBS DOWN ON THE NORTHWEST SIDE OF
            JOLIET NEAR CREST HILL

&&

CGITRO

Local storm report, Oct 2, 5:53 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
553 PM CDT MON OCT 02 2006

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

0300 PM     HAIL             CRETE                   41.45N 87.62W
10/02/2006  M0.75 INCH       WILL               IL   TRAINED SPOTTER

0300 PM     TSTM WND GST     CRETE                   41.45N 87.62W
10/02/2006  E60 MPH          WILL               IL   TRAINED SPOTTER

            HOUSE ANTENNAS BLOWN OFF HOMES.

0258 PM     HAIL             ROMEOVILLE              41.65N 88.09W
10/02/2006  M0.75 INCH       WILL               IL   TRAINED SPOTTER

0135 PM     HAIL             NAPERVILLE              41.76N 88.15W
10/02/2006  M0.75 INCH       DUPAGE             IL   TRAINED SPOTTER

            SMALL TREE LIMBS DOWN NEAR RTE 34 AND RICKERT RD

0225 PM     HAIL             JOLIET                  41.53N 88.12W
10/02/2006  M0.75 INCH       WILL               IL   TRAINED SPOTTER

0210 PM     HAIL             BRIDGEVIEW              41.74N 87.81W
10/02/2006  M0.88 INCH       COOK               IL   TRAINED SPOTTER

0117 PM     HAIL             CLARENDON HILLS         41.80N 87.96W
10/02/2006  M0.75 INCH       DUPAGE             IL   TRAINED SPOTTER

0336 PM     HAIL             GRIFFITH                41.52N 87.42W
10/02/2006  M1.00 INCH       LAKE               IN   TRAINED SPOTTER

0309 PM     HAIL             ROMEOVILLE              41.65N 88.09W
10/02/2006  M0.88 INCH       WILL               IL   TRAINED SPOTTER

0307 PM     HAIL             ROMEOVILLE              41.65N 88.09W
10/02/2006  M0.88 INCH       WILL               IL   TRAINED SPOTTER

&&

HALBACH

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 1, 8:16 PM CDT	Severe Thunderstorm Warning	LOT	Ogle	33 min
Oct 2, 1:14 PM CDT	Severe Thunderstorm Warning	LOT	Kane	21 min
Oct 2, 1:29 PM CDT	Severe Thunderstorm Warning	LOT	Kendall	31 min
Oct 2, 1:32 PM CDT	Severe Thunderstorm Warning	LOT	Cook, DuPage	28 min
Oct 2, 1:37 PM CDT	Special Marine Warning	LOT		83 min
Oct 2, 1:55 PM CDT	Severe Thunderstorm Warning	LOT	Will	50 min
Oct 2, 1:59 PM CDT	Severe Thunderstorm Warning	LOT	Cook	46 min
Oct 2, 2:15 PM CDT	Severe Thunderstorm Warning	LOT	Kendall	60 min
Oct 2, 2:20 PM CDT	Special Marine Warning	LOT		85 min
Oct 2, 2:47 PM CDT	Severe Thunderstorm Warning	LOT	Will	46 min
Oct 2, 2:54 PM CDT	Severe Thunderstorm Warning	LOT	Cook, Will	38 min
Oct 2, 5:53 PM CDT	Severe Thunderstorm Warning	LOT	Will	51 min
Oct 2, 2:49 PM CDT	Severe Thunderstorm Warning	LOT	Lake, Porter	56 min
Oct 2, 3:46 PM CDT	Severe Thunderstorm Warning	LOT	Porter	44 min

Nearby

Flash Flood Warnings in Illinois, 2006 Every flash flood warning in 2006

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.