Alert archive / Illinois / Flash Flood Warnings in 2011

Flash Flood Warning 67, NWS Lincoln, IL

July 29, 2011Coles County, Cumberland County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 29, 2011, 7:32 PM CDT for Coles County, Cumberland County, Illinois. It was in force for 6 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 29, 2011, 7:32 PM CDT (00:32 UTC)
Expired
Jul 30, 2011, 1:30 AM CDT
In force
6 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Coles County, IL, Cumberland County, IL

The radar

The Evansville,IN radar (KVWX), 122 km from the middle of the area, began a volume at 00:32 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.

What was reported inside it

TimeReportWhereRemark
Jul 29, 8:55 PM CDTFLASH FLOODNeoga, IL3 FEET OF WATER OVER HIGHWAY 45. RELAYED BY WFO LSX
Jul 29, 9:10 PM CDTHEAVY RAIN 3.253 Ssw Jewett, ILAPRS WEATHER NET
Jul 29, 9:40 PM CDTHEAVY RAIN 2.42 Ne Neoga, ILRAIN FELL BETWEEN 715 AND 930 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 102 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-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 2011-07-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1826 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2011-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1826 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
816 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.5

Open this sounding in Storm Lab

The text

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

614 
WGUS53 KILX 300032
FFWILX
ILC029-035-300630-
/O.NEW.KILX.FF.W.0067.110730T0032Z-110730T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
732 PM CDT FRI JUL 29 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CUMBERLAND COUNTY IN EAST CENTRAL ILLINOIS...
  SOUTH CENTRAL COLES COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 130 AM CDT

* AT 730 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. DOPPLER RAINFALL ESTIMATES RANGE FROM 1 TO LOCALLY
  3 INCHES JUST SOUTH OF NEOGA NORTHEAST TO 1 MILE NORTH OF HUTTON.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  TOLEDO...GREENUP...HAZEL DELL...JANESVILLE...JEWETT AND NEOGA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

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 3917 8847 3935 8847 3948 8801 3917 8801

$$

SMITH
2 follow-up statements
339 
WGUS73 KILX 300341
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1041 PM CDT FRI JUL 29 2011

ILC029-035-300630-
/O.CON.KILX.FF.W.0067.000000T0000Z-110730T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COLES IL-CUMBERLAND IL-
1041 PM CDT FRI JUL 29 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CUMBERLAND AND SOUTH
CENTRAL COLES COUNTIES UNTIL 130 AM CDT...

AT 1035 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED
THAT FROM 2 TO 4 INCHES OF RAIN HAS FALLEN FROM SOUTHWEST THROUGH
NORTHEAST CUMBERLAND COUNTY INTO SOUTHEAST COLES. RAINFALL ESTIMATES
WERE AS HIGH AS 8.50 INCHES JUST WEST OF JEWETT...WITH A SECONDARY
AREA OF EXCESSIVE RAINFALL OF NEARLY 5 INCHES BETWEEN CHARLESTON AND
HUTTON IN SOUTHEAST COLES COUNTY. 

EVEN THOUGH THE HEAVY RAINFALL HAS SHIFTED AWAY FROM THE AREA...THE
FLASH FLOOD THREAT HAS NOT ENDED. SOME LOCATIONS THAT WILL STILL BE
THREATENED BY FLOODING INCLUDE...TOLEDO...GREENUP...HAZEL DELL...
JANESVILLE...JEWETT AND NEOGA.

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.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 3917 8847 3935 8847 3948 8801 3917 8801

$$

SMITH
993 
WGUS73 KILX 300629
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
129 AM CDT SAT JUL 30 2011

ILC029-035-300641-
/O.EXP.KILX.FF.W.0067.000000T0000Z-110730T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COLES IL-CUMBERLAND IL-
129 AM CDT SAT JUL 30 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CUMBERLAND AND
SOUTH CENTRAL COLES COUNTIES WILL BE ALLOWED TO EXPIRE AT 130 AM
CDT...

THE FLASH FLOOD WARNING WILL EXPIRE FOR COLES COUNTY AND EASTERN 
CUMBERLAND COUNTY...SINCE EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED 
OVER THAT PORTION OF THE WARNED AREA. HOWEVER...THE FLASH FLOOD 
WARNING WAS REPLACED BY AN AREAL FLOOD WARNING FOR WESTERN 
CUMBERLAND COUNTY UNTIL 730 AM. IF FLOODING HAS BEEN 
OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3917 8847 3935 8847 3948 8801 3917 8801

$$

SHIMON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 7:08 PM CDTSpecial Weather StatementILXCumberland67 min
Jul 29, 7:13 PM CDTSevere Thunderstorm WarningILXCumberland, Effingham, Shelby62 min
Jul 29, 8:08 PM CDTSpecial Weather StatementILXCrawford, Jasper52 min
Jul 29, 8:34 PM CDTSevere Thunderstorm WarningILXJasper26 min
Jul 29, 9:01 PM CDTSpecial Weather StatementILXCrawford, Lawrence59 min
Jul 29, 9:06 PM CDTAreal Flood AdvisoryILXClark, Crawford, Cumberland, Effingham, Jasper6 hr
Jul 29, 9:09 PM CDTSevere Thunderstorm WarningILXCrawford, Jasper, Lawrence, Richland52 min
Jul 29, 9:17 PM CDTFlash Flood WarningILXClark, Crawford, Jasper6 hr
Jul 30, 1:25 AM CDTAreal Flood WarningILXCumberland6 hr

Nearby

Flash Flood Warnings in Illinois, 2011Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.