Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 89, NWS Lincoln, IL

August 19, 2002Vermilion County, Illinois

NWS Lincoln, IL issued this flash flood warning at Aug 19, 2002, 2:34 AM CDT for Vermilion County, Illinois. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 19, 2002, 2:34 AM CDT (07:34 UTC)
Expired
Aug 19, 2002, 8:30 AM CDT
In force
6 hr
Issued by
NWS Lincoln, IL
Area
Counties, with a storm outline in the text

County Vermilion County, IL

The radar

The Lincoln radar (KILX), 140 km from the middle of the area, began a volume at 07:33 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

Lincoln, IL (KILX), launched 00:00Z, 7.6 hours before the alert went out and 79 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 00:00Z on 2002-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 523 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2002-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 172 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
523 J/kg
Mixed-layer CIN
-272 J/kg
Mixed-layer LCL
743 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
172 m²/s²
0-3 km storm-relative helicity
282 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KILX 190734
FFWSPI
ILC183-191330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
229 AM CDT MON AUG 19 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN VERMILION COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL 830 AM CDT

* AT 227 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  HEAVY RAINS CONTINUING OVER EXTREME NORTHERN VERMILION COUNTY...FROM
  NEAR RANKIN TO HOOPESTON TO JUST NORTH OF ROSSVILLE. IN THIS AREA...
  NATIONAL WEATHER SERVICE DOPPLER RADAR HAS ESTIMATED THE FROM 2 TO 3
  INCHES OF RAIN HAS FALLEN IN THE PAST HOUR.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE ACROSS THE 
  NORTHERN HALF OF VERMILION COUNTY. RAINFALL AMOUNTS WILL LIKELY RANGE 
  FROM 3 TO 4 INCHES BY 400 AM. THESE RAINFALL AMOUNTS WILL LIKELY PRODUCE 
  FLASH FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF IN A FLOOD PRONE AREA...MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG CREEKS AND STREAMS ARE ESPECIALLY VULNERABLE
TO THE EFFECTS OF FLASH FLOODING. DO NOT ATTEMPT TO CROSS FLOODED
AREAS BY FOOT OR AUTOMOBILE.

REPORT FLASH FLOODING TO YOUR LOCAL ESDA...OR THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY
TUNED FOR LATER STATEMENTS.

LAT...LON 4050 8755 4012 8755 4012 8794 4049 8794

SMITH
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 12:20 AM CDTSevere Thunderstorm WarningILXMcLean40 min
Aug 19, 1:03 AM CDTSevere Thunderstorm WarningILXMcLean27 min
Aug 19, 2:03 AM CDTSevere Thunderstorm WarningILXVermilion42 min
Aug 19, 4:13 AM CDTSevere Thunderstorm WarningILXMason47 min
Aug 19, 4:36 AM CDTFlash Flood WarningILXChampaign6 hr
Aug 19, 5:32 AM CDTFlash Flood WarningILXChampaign, Vermilion6 hr
Aug 19, 5:32 AM CDTSevere Thunderstorm WarningILXSangamon58 min

Nearby

Flash Flood Warnings in Illinois, 2002Every flash flood warning in 2002

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.