Alert archive / Illinois / Flash Flood Warnings in 2000

Flash Flood Warning 20, NWS Lincoln, IL

August 23, 2000Lawrence County, Richland County, Illinois

NWS Lincoln, IL issued this flash flood warning at Aug 23, 2000, 10:17 PM CDT for Lawrence County, Richland County, Illinois. It was in force for 3 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 23, 2000, 10:17 PM CDT (03:17 UTC)
Expired: Aug 24, 2000, 1:15 AM CDT
In force: 3 hr
Issued by: NWS Lincoln, IL
Area: Whole counties

Counties Lawrence County, IL, Richland County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.3 hours before the alert went out and 170 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: 1082 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1541 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 240320
FFWILX
ILC101-159-240615-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1017 PM CDT WED AUG 23 2000

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  RICHLAND COUNTY IN SOUTHEAST ILLINOIS
  LAWRENCE COUNTY IN SOUTHEAST ILLINOIS

* UNTIL 115 AM CDT

* AT 1015 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAINS CONTINUING ACROSS RICHLAND AND LAWRENCE COUNTIES. UP TO
  2 INCHES OF RAIN HAS BEEN ESTIMATED SINCE 9 PM. UP TO THREE INCHES OF
  RAIN FELL OVER THIS AREA LAST NIGHT AS WELL...SO ANY MORE RAIN
  WILL LIKELY PRODUCE FLASH FLOODING.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL RATES OF 1 TO 2 INCHES PER
  HOUR WILL CONTINUE ACROSS RICHLAND AND LAWRENCE COUNTIES THROUGH
  MIDNIGHT. THESE RAINFALL RATES WILL LIKELY PRODUCE FLASH FLOODING.

EXCESSIVE RAINFALL WILL CAUSE FLOODING NEAR STREAMS...CREEKS AND
NEARBY FARMLAND. BE ESPECIALLY CAUTIOUS ON COUNTY ROADS AND IN LOW
LYING AREAS. NEVER CROSS AREAS IN WHICH WATER COVERS THE ROADS.

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.

BYRD
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 23, 7:15 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Logan	60 min
Aug 23, 7:37 PM CDT	Severe Thunderstorm Warning	ILX	Morgan	53 min
Aug 23, 9:47 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence, Richland	43 min
Aug 23, 10:04 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Sangamon	26 min
Aug 24, 12:17 AM CDT	Severe Thunderstorm Warning	ILX	Clay	43 min

Nearby

Flash Flood Warnings in Illinois, 2000 Every flash flood warning in 2000

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.