Alert archive / Illinois / Flash Flood Warnings in 2002

Flash Flood Warning 60, NWS Lincoln, IL

June 11, 2002Mason County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 11, 2002, 2:44 PM CDT for Mason 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: Jun 11, 2002, 2:44 PM CDT (19:44 UTC)
Expired: Jun 11, 2002, 8:30 PM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Mason County, IL

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 7.7 hours before the alert went out and 112 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: 1367 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 157 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 111944
FFWSPI
ILC125-120130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
241 PM CDT TUE JUN 11 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 830 PM CDT

* AT 237 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  HEAVY RAINS CONTINUING OVER PARTS OF MASON COUNTY...ESPECIALLY 
  FROM SNICARTE TO MASON CITY. DOPPLER RAINFALL ESTIMATES FROM THE
  PAST HOUR INDICATE THAT FROM 1 TO 2 INCHES OF RAIN HAS FALLEN IN
  THIS AREA. THIS IS IN ADDITION TO THE HEAVY RAINS WHICH OCCURRED 
  EARLIER THIS MORNING. THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL 
  CONTINUE ACROSS THIS AREA THROUGH 400 PM...WITH LIGHT TO MODERATE
  RAINS CONTINUING INTO THE EVENING. 

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 4043 8984 4024 8964 4018 8981 4007 9019
          4021 9016

SMITH
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 12:24 PM CDT	Flash Flood Warning	ILX	Fulton	6 hr
Jun 11, 2:26 PM CDT	Flash Flood Warning	ILX	Schuyler	6 hr
Jun 11, 3:00 PM CDT	Severe Thunderstorm Warning	ILX	Cass, Morgan, Schuyler, Scott	60 min
Jun 11, 3:22 PM CDT	Tornado Warning	ILX	Morgan	38 min
Jun 11, 3:33 PM CDT	Flash Flood Warning	ILX	Morgan, Sangamon	6 hr
Jun 11, 3:53 PM CDT	Severe Thunderstorm Warning	ILX	Menard, Sangamon	67 min
Jun 11, 4:19 PM CDT	Severe Thunderstorm Warning	ILX	Champaign	41 min
Jun 11, 4:31 PM CDT	Severe Thunderstorm Warning	ILX	Christian, Shelby	59 min
Jun 11, 5:02 PM CDT	Tornado Warning	ILX	Shelby	28 min
Jun 11, 5:11 PM CDT	Severe Thunderstorm Warning	ILX	Cumberland	64 min
Jun 11, 5:12 PM CDT	Severe Thunderstorm Warning	ILX	Effingham	63 min
Jun 11, 5:29 PM CDT	Tornado Warning	ILX	Effingham	46 min
Jun 11, 5:35 PM CDT	Severe Thunderstorm Warning	ILX	Coles	40 min
Jun 11, 5:40 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Jasper	65 min
Jun 11, 6:05 PM CDT	Severe Thunderstorm Warning	ILX	Clark, Edgar	55 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.