Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 14, NWS Lincoln, IL

April 21, 2002Christian County, Illinois

NWS Lincoln, IL issued this flash flood warning at Apr 21, 2002, 8:19 AM CDT for Christian 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, 8:19 AM CDT (13:19 UTC)
Expired: Apr 21, 2002, 2:00 PM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Christian County, IL

The radar

The Lincoln radar (KILX), 58 km from the middle of the area, began a volume at 13:18 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, 1.3 hours before the alert went out and 80 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 211319 CCA
FFWSPI
ILC021-211900-

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHRISTIAN COUNTY IN CENTRAL ILLINOIS

* UNTIL 200 PM CDT

* AT 810 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  1 TO 3 INCHES OF RAIN HAS FALLEN ACROSS THE NORTHERN HALF OF THE
  COUNTY...NORTH OF TAYLORVILLE...SINCE ABOUT MIDNIGHT.  

* THUNDERSTORMS WITH EXCESSIVE RAINFALL ARE EXPECTED TO CONTINUE 
  ACROSS THE ENTIRE COUNTY THROUGH AT LEAST 10 AM. RAINFALL RATES 
  COULD EXCEED AN INCH AN HOUR. 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 3980 8920 3965 8919 3964 8907 3937 8906
          3938 8953 3962 8951 3980 8925

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, 9:10 AM CDT	Flash Flood Warning	ILX	Coles	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.