Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 31, NWS Lincoln, IL

May 7, 2002Crawford County, Effingham County, Jasper County, Illinois

NWS Lincoln, IL issued this flash flood warning at May 7, 2002, 4:02 AM CDT for Crawford County, Effingham County, Jasper County, Illinois. It was in force for 7 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: May 7, 2002, 4:02 AM CDT (09:02 UTC)
Expired: May 7, 2002, 11:00 AM CDT
In force: 7 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Crawford County, IL, Effingham County, IL, Jasper County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 9.0 hours before the alert went out and 125 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: 854 J/kg
Mixed-layer CIN: -111 J/kg
Mixed-layer LCL: 913 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 070902
FFWSPI
ILC033-049-079-071600-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
359 AM CDT TUE MAY 7 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CRAWFORD COUNTY IN EAST CENTRAL ILLINOIS
  EFFINGHAM COUNTY IN SOUTH CENTRAL ILLINOIS
  JASPER COUNTY IN SOUTHEAST ILLINOIS

* UNTIL 1100 AM CDT

* AT 356 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  HEAVY RAINS FALLING OVER SOUTHEAST CENTRAL ILLINOIS...SOUTH 
  OF INTERSTATE 70. ONE TO TWO INCHES OF RAIN HAS BEEN ESTIMATED 
  SINCE 2 AM.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE ACROSS THE 
  SAME AREA DURING THE MORNING HOURS. ADDITIONAL RAINFALL AMOUNTS 
  WILL LIKELY RANGE FROM ONE TO THREE INCHES OVER THE NEXT SEVERAL
  HOURS WITH TOTAL ACCUMULATIONS OVER 4 INCHES LATER THIS MORNING. 
  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.

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.

LAT...LON 3918 8768 3889 8759 3894 8874 3921 8879
          3914 8827

AUTEN

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 12:12 AM CDT	Severe Thunderstorm Warning	ILX	Sangamon	48 min
May 7, 1:02 AM CDT	Severe Thunderstorm Warning	ILX	Sangamon	43 min
May 7, 1:25 AM CDT	Severe Thunderstorm Warning	ILX	Logan	50 min
May 7, 1:28 AM CDT	Severe Thunderstorm Warning	ILX	Christian	47 min
May 7, 1:36 AM CDT	Severe Thunderstorm Warning	ILX	Cass, Menard	39 min
May 7, 1:49 AM CDT	Severe Thunderstorm Warning	ILX	Macon	41 min
May 7, 2:41 AM CDT	Flash Flood Warning	ILX	Cass, Christian, Logan, Macon, Menard, Morgan and 3 more	6 hr
May 7, 3:18 AM CDT	Severe Thunderstorm Warning	ILX	Effingham, Shelby	42 min
May 7, 3:22 AM CDT	Flash Flood Warning	ILX	Champaign, Clark, Coles, Cumberland, Douglas, Edgar and 3 more	7 hr
May 7, 3:40 AM CDT	Severe Thunderstorm Warning	ILX	Coles, Cumberland, Jasper	35 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.