Alert archive / Illinois / Flash Flood Warnings in 2001

Flash Flood Warning 34, NWS Lincoln, IL

July 29, 2001Lawrence County, Richland County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 29, 2001, 4:46 AM 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: Jul 29, 2001, 4:46 AM CDT (09:46 UTC)
Expired: Jul 29, 2001, 7:45 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, 9.8 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: 1219 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 846 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 15 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KILX 290950
FFWILX
ILC101-159-291245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
446 AM CDT SUN JUL 29 2001

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 745 AM CDT

* AT 442 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN HAS FALLEN FROM NOBLE IN SOUTHERN RICHLAND COUNTY
  TO LAWRENCEVILLE. DOPPLER RAINFALL ESTIMATES INDICATE FROM TWO
  TO THREE INCHES HAS FALLEN SINCE 300 AM. THIS IS IN ADDITION
  TO THE ONE TO TWO INCHES OF RAIN THAT HAD FALLEN IN THIS
  AREA LATE YESTERDAY .

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL CONTINUE FROM NOBLE
  TO CALHOUN TO JUST SOUTH OF LAWRENCEVILLE THROUGH 600 AM.
  ADDITIONAL RAINFALL AMOUNTS WILL LIKELY RANGE FROM ONE TO TWO
  INCHES BY 600 AM. 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.

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 2:29 AM CDT	Severe Thunderstorm Warning	ILX	Clark	31 min

Nearby

Flash Flood Warnings in Illinois, 2001 Every flash flood warning in 2001

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.