Alert archive / Illinois / Flash Flood Warnings in 2011

Flash Flood Warning 8, NWS Lincoln, IL

April 22, 2011Cass County, Morgan County, Scott County, Illinois

NWS Lincoln, IL issued this flash flood warning at Apr 22, 2011, 12:07 PM CDT for Cass County, Morgan County, Scott 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 22, 2011, 12:07 PM CDT (17:07 UTC)
Expired: Apr 22, 2011, 5:46 PM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

Counties Cass County, IL, Morgan County, IL, Scott County, IL

The radar

The Lincoln radar (KILX), 92 km from the middle of the area, began a volume at 17:11 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 12:00Z, 5.1 hours before the alert went out and 153 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: 845 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 585 m²/s²
0-3 km storm-relative helicity: 683 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.

882 
WGUS53 KILX 221707
FFWILX
ILC017-137-171-222300-
/O.NEW.KILX.FF.W.0008.110422T1707Z-110422T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1207 PM CDT FRI APR 22 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CASS COUNTY IN WEST CENTRAL ILLINOIS...
  MORGAN COUNTY IN WEST CENTRAL ILLINOIS...
  SCOTT COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 600 PM CDT

* AT 1205 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED SLOW
  MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED 
  AREA. RADAR ESTIMATED 1.5 TO 2 INCHES OF RAIN THROUGH THE MORNING.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  BEARDSTOWN...JACKSONVILLE...VIRGINIA...WINCHESTER...ALEXANDER...
  ALSEY...ARENZVILLE...ASHLAND...BLUFF SPRINGS...BLUFFS...
  CHANDLERVILLE...CHAPIN...EXETER...FRANKLIN...LITERBERRY...
  MANCHESTER...MEREDOSIA...MURRAYVILLE...NAPLES AND WOODSON.

LOCAL EMERGENCY MANAGEMENT HAS REPORTED 2 TO 3 FEET OF WATER OVER 
THE ROAD AT ROUTE 104 AND REESE CURB.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3979 9060 3982 9058 3988 9058 3992 9054
      3998 9052 4008 9035 4007 9030 4005 9027
      4007 9016 4005 9000 3979 9000 3977 8998
      3954 8996 3952 9058 3970 9062

$$

HJS

4 follow-up statements

109 
WGUS73 KILX 221900
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
200 PM CDT FRI APR 22 2011

ILC017-137-171-222300-
/O.CON.KILX.FF.W.0008.000000T0000Z-110422T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN IL-SCOTT IL-CASS IL-
200 PM CDT FRI APR 22 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CASS...SCOTT AND MORGAN
COUNTIES UNTIL 600 PM CDT...

AT 157 PM CDT...LAW ENFORCEMENT OFFICIALS REPORTED THAT SOME AREAS 
WERE STILL AFFECTED BY THE RECENT HEAVY RAINFALL. THEY REPORTED
THAT FLOODING CONTINUES 2 MILES NORTHWEST OF FRANKLIN...WHERE 
WATER IS OVER A PORTION OF ROUTE 104...NEAR THE REESE CURVE.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
BEARDSTOWN...JACKSONVILLE...VIRGINIA...WINCHESTER...ALEXANDER...
ALSEY...ARENZVILLE...ASHLAND...BLUFF SPRINGS...BLUFFS...
CHANDLERVILLE...CHAPIN...EXETER...FRANKLIN...LITERBERRY...
MANCHESTER...MEREDOSIA...MURRAYVILLE AND WOODSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS
AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE ALSO SUBJECT TO FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3979 9060 3982 9058 3988 9058 3992 9054
      3998 9052 4008 9035 4007 9030 4005 9027
      4007 9016 4005 9000 3979 9000 3977 8998
      3954 8996 3952 9058 3970 9062

$$

GOETSCH

659 
WGUS73 KILX 222033
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
333 PM CDT FRI APR 22 2011

ILC017-171-222047-
/O.CAN.KILX.FF.W.0008.000000T0000Z-110422T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCOTT IL-CASS IL-
333 PM CDT FRI APR 22 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CASS AND SCOTT
COUNTIES IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3964 9012 3967 9008 3965 9005 3962 9009

$$

ILC137-222300-
/O.CON.KILX.FF.W.0008.000000T0000Z-110422T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN IL-
333 PM CDT FRI APR 22 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EAST CENTRAL MORGAN
COUNTY UNTIL 600 PM CDT...

AT 332 PM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT FLASH 
FLOODING WAS OCCURRING AT REES CURVE AND THE ROAD REMAINS CLOSED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL HAS CONTINUED TO CAUSE FLOODING 
OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. 
ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF 
CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE ALSO SUBJECT TO 
FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3964 9012 3967 9008 3965 9005 3962 9009

$$

AUTEN

796 
WGUS73 KILX 222243
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
543 PM CDT FRI APR 22 2011

ILC137-222258-
/O.CAN.KILX.FF.W.0008.000000T0000Z-110422T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN IL-
543 PM CDT FRI APR 22 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EAST CENTRAL MORGAN
COUNTY IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED...ENDING THE FLOOD 
THREAT. REES CURVE IS NOT OPEN AGAIN. IF FLOODING HAS BEEN 
OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3964 9012 3967 9008 3965 9005 3962 9009

$$

AUTEN

809 
WGUS73 KILX 222246 CCA
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
546 PM CDT FRI APR 22 2011

ILC137-222258-
/O.CAN.KILX.FF.W.0008.000000T0000Z-110422T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORGAN IL-
546 PM CDT FRI APR 22 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EAST CENTRAL MORGAN
COUNTY IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED...ENDING THE FLOOD 
THREAT. REES CURVE IS NOW OPEN. IF FLOODING HAS BEEN 
OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3964 9012 3967 9008 3965 9005 3962 9009

$$

AUTEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 8:48 AM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	27 min
Apr 22, 10:41 AM CDT	Special Weather Statement	ILX	Macon	34 min
Apr 22, 12:20 PM CDT	Flash Flood Warning	ILX	Menard	2 hr
Apr 22, 12:41 PM CDT	Severe Thunderstorm Warning	ILX	Clay, Effingham, Jasper, Richland	49 min
Apr 22, 1:23 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Jasper, Lawrence, Richland	37 min
Apr 22, 1:37 PM CDT	Severe Thunderstorm Warning	ILX	Lawrence, Richland	23 min
Apr 22, 2:12 PM CDT	Flash Flood Warning	ILX	Lawrence	4 hr
Apr 22, 2:35 PM CDT	River Flood Warning	ILX	Crawford, Jasper	12 days
Apr 22, 6:29 PM CDT	River Flood Warning	ILX	Fulton, Knox	56 hr

Nearby

Flash Flood Warnings in Illinois, 2011 Every flash flood warning in 2011

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.