Alert archive / Illinois / Flash Flood Warnings in 2006
Flash Flood Warning 11, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Jul 27, 2006, 10:16 PM CDT for Livingston 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
- Jul 27, 2006, 10:16 PM CDT (03:16 UTC)
- Expired
- Jul 28, 2006, 1:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Chicago, IL
- Area
- Counties, with a storm outline in the text
County Livingston County, IL
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 3.3 hours before the alert went out and 83 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.
- Mixed-layer CAPE
- 2296 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 779 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 94 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 3.6
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 Jul 27, 6:35 PM CDT, 3 hours 41 minutes earlier.
Area forecast discussion, Jul 27, 6:35 PM CDT, 3 hours 41 minutes before
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</html>Hazardous weather outlook, Jul 27, 4:00 PM CDT, 6 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 400 PM CDT THU JUL 27 2006 ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011- 019-280930- 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- 400 PM CDT THU JUL 27 2006 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA. .DAY ONE... TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE ENTIRE AREA THIS EVENING. THE MAIN THREATS WILL BE DAMAGING WINDS AND HEAVY RAIN...WHICH MAY CAUSE LOCALIZED FLOODING. AREAS OF FOG WILL BE POSSIBLE AFTER MIDNIGHT. THE FOG MAY BE DENSE ACROSS PARTS OF NORTHWEST ILLINOIS. .DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY HOT AND HUMID CONDITIONS WILL AFFECT THE ENTIRE AREA FROM SATURDAY THROUGH TUESDAY. HIGH TEMPERATURES THROUGH THIS PERIOD WILL BE IN THE MID 90S. THE COMBINATION OF THE HEAT AND HUMIDITY WILL PRODUCE PEAK AFTERNOON HEAT INDICES BETWEEN 100 TO 105 SATURDAY THROUGH TUESDAY. THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS WILL BE NEEDED THIS EVENING. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE) LMZ740>745-766-280930- WINTHROP HARBOR IL TO MICHIGAN CITY IN- LAKE MICHIGAN- 400 PM CDT THU JUL 27 2006 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS AND INDIANA WATERS OF LAKE MICHIGAN. .DAY ONE... TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING. THE MAIN THREAT WILL BE DAMAGING WINDS. AREAS OF FOG WILL BE POSSIBLE AFTER MIDNIGHT. .DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)
In the hours before
Local storm report, Jul 27, 6:31 PM CDT, 3 hours 45 minutes before
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</html>Local storm report, Jul 27, 6:47 PM CDT, 3 hours 29 minutes before
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</html>Local storm report, Jul 27, 7:31 PM CDT, 2 hours 45 minutes before
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</html>Local storm report, Jul 27, 7:49 PM CDT, 2 hours 27 minutes before
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</html>Local storm report, Jul 27, 8:17 PM CDT, 1 hour 59 minutes before
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</html>Local storm report, Jul 27, 9:12 PM CDT, 1 hour 4 minutes before
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</html>The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 6:51 AM CDT | Dense Fog Advisory | LOT | Ford, Grundy, Iroquois, Kankakee, LaSalle, Livingston | 2 hr |
| Jul 28, 3:22 PM CDT | Excessive Heat Warning | LOT | 5 days |
Nearby
Flash Flood Warnings in Illinois, 2006Every 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.