Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 12, NWS Lincoln, IL

April 21, 2002Edgar County, Illinois

NWS Lincoln, IL issued this flash flood warning at Apr 21, 2002, 5:30 AM CDT for Edgar 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, 5:30 AM CDT (10:30 UTC)
Expired: Apr 21, 2002, 11:00 AM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Edgar County, IL

The radar

The Indianapolis radar (KIND), 123 km from the middle of the area, began a volume at 10:32 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, 10.5 hours before the alert went out and 86 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 274 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 211030
FFWSPI
ILC045-211600-

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

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 1100 AM CDT

* AT 525 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN HAS FALLEN ACROSS THE AREA SINCE MIDNIGHT. RADAR 
  WAS ESTIMATING TOTAL RAINFALL APPROACHING 2 INCHES.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE ACROSS THE
  AREA. RAINFALL RATES THROUGH 8 AM 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 3989 8756 3961 8754 3960 8796 3988 8794

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, 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, 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.