Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 15, NWS Lincoln, IL

April 21, 2002Coles County, Illinois

NWS Lincoln, IL issued this flash flood warning at Apr 21, 2002, 9:10 AM CDT for Coles 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: Apr 21, 2002, 9:10 AM CDT (14:10 UTC)
Expired: Apr 21, 2002, 3:00 PM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Coles County, IL

The radar

The Lincoln radar (KILX), 118 km from the middle of the area, began a volume at 14:11 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 12:00Z, 2.2 hours before the alert went out and 75 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: 1 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 417 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 504 m²/s²
0-3 km storm-relative helicity: 540 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 
WGUS53 KILX 211410
FFWSPI
ILC029-212000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
906 AM CDT SUN APR 21 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  COLES COUNTY IN EAST CENTRAL ILLINOIS

* UNTIL 300 PM CDT

* AT 9 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  WIDESPREAD THUNDERSTORMS WITH VERY HEAVY RAIN ACROSS THE 
  COUNTY. RADAR IS ESTIMATING 1 TO 2 INCHES OF RAIN HAS ALREADY
  FALLEN EARLY THIS MORNING. 

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE ACROSS
  THE ENTIRE AREA THROUGH AT LEAST 11 AM. ADDITIONAL RAINFALL 
  AMOUNTS COULD REACH 2 TO 3 INCHES THIS MORNING WITH RAINFALL 
  RATES OF AN INCH AN HOUR. THIS WILL LIKELY RESULT IN 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 3964 8803 3941 8804 3939 8845 3964 8846

FRIEDERS


NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 5:13 AM CDT	Flash Flood Warning	ILX	Douglas, Moultrie	6 hr
Apr 21, 5:30 AM CDT	Flash Flood Warning	ILX	Edgar	6 hr
Apr 21, 8:16 AM CDT	Flash Flood Warning	ILX	Christian	6 hr
Apr 21, 8:19 AM CDT	Flash Flood Warning	ILX	Christian	6 hr
Apr 21, 2:22 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	38 min
Apr 21, 2:27 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence	33 min
Apr 21, 3:24 PM CDT	Severe Thunderstorm Warning	ILX	Effingham	51 min
Apr 21, 3:58 PM CDT	Severe Thunderstorm Warning	ILX	Clay	32 min

Nearby

Flash Flood Warnings in Illinois, 2002 Every 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.