Alert archive / Illinois / Flash Flood Warnings in 2001

Flash Flood Warning 35, NWS Lincoln, IL

August 22, 2001Schuyler County, Illinois

NWS Lincoln, IL issued this flash flood warning at Aug 22, 2001, 9:21 PM CDT for Schuyler 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 counties it named.

The facts

Issued
Aug 22, 2001, 9:21 PM CDT (02:21 UTC)
Expired
Aug 23, 2001, 3:00 AM CDT
In force
6 hr
Issued by
NWS Lincoln, IL
Area
Whole counties

County Schuyler County, IL

The radar

The Lincoln radar (KILX), 109 km from the middle of the area, began a volume at 02:24 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 00:00Z, 2.4 hours before the alert went out and 163 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 00:00Z on 2001-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 494 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, Davenport, at 00:00Z on 2001-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.19395878Sfc1 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
494 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
1507 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 230221
FFWSPI
FFWSPI
ILC169-230800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
921 PM CDT WED AUG 22 2001

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SCHUYLER COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 300 AM CDT

* AT 920 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAINS CONTINUING ACROSS SCHUYLER COUNTY...ESPECIALLY IN 
  AREAS NORTH OF A CAMDEN TO RUSHVILLE LINE. RADAR HAS ESTIMATED
  AROUND 3 INCHES OF RAINFALL HAS OCCURRED THIS EVENING. 

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL LIKELY CONTINUE ACROSS
  SCHUYLER COUNTY THROUGH AT LEAST MIDNIGHT AS STRONG THUNDERSTORMS
  PERSIST. RAINFALL RATES WILL LIKELY EXCEED AN INCH AN HOUR DURING
  THIS PERIOD. THESE RAINFALL AMOUNTS WILL LIKELY PRODUCE FLASH 
  FLOODING.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLASH FLOODS. IT IS VERY DIFFICULT AT NIGHT TO JUDGE HOW
MUCH WATER COVERS ROADWAYS. DO NOT ATTEMPT TO CROSS FLOODED ROADWAYS.

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.

$$
FRIEDERS


NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 7:23 PM CDTSevere Thunderstorm WarningILXMason, Menard67 min
Aug 22, 7:42 PM CDTSevere Thunderstorm WarningILXLogan63 min
Aug 22, 8:10 PM CDTSevere Thunderstorm WarningILXDeWitt, McLean65 min
Aug 22, 8:37 PM CDTSevere Thunderstorm WarningILXPiatt38 min
Aug 22, 9:07 PM CDTSevere Thunderstorm WarningILXVermilion53 min
Aug 22, 10:54 PM CDTFlash Flood WarningILXCass6 hr
Aug 23, 2:30 AM CDTFlash Flood WarningILXSchuyler7 hr

Nearby

Flash Flood Warnings in Illinois, 2001Every flash flood warning in 2001

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.