Alert archive / Illinois / Flash Flood Warnings in 2011

Flash Flood Warning 41, NWS Lincoln, IL

June 19, 2011Effingham County, Shelby County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 19, 2011, 4:34 AM CDT for Effingham County, Shelby County, Illinois. It was in force for 9 hr. 6 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: Jun 19, 2011, 4:34 AM CDT (09:34 UTC)
Expired: Jun 19, 2011, 1:30 PM CDT
In force: 9 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

Counties Effingham County, IL, Shelby County, IL

The radar

The Lincoln radar (KILX), 116 km from the middle of the area, began a volume at 09:36 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

Time	Report	Where	Remark
Jun 19, 4:35 AM CDT	HEAVY RAIN 1.86	Effingham, IL	TOTAL IN 40 MINUTES
Jun 19, 4:36 AM CDT	HEAVY RAIN 1.33	Effingham, IL	RAINFALL TOTAL IN THE PAST 30 MINUTES.
Jun 19, 7:00 AM CDT	HEAVY RAIN 1.86	4 W Effingham, IL	24-HOUR TOTAL. 2-DAY TOTAL 3.80
Jun 19, 7:00 AM CDT	HEAVY RAIN 2.57	Effingham, IL	TOTAL SINCE 4 AM
Jun 19, 7:00 AM CDT	HEAVY RAIN 2.67	5 N Effingham, IL
Jun 19, 7:30 AM CDT	HEAVY RAIN 2.15	Beecher City, IL	24-HOUR TOTAL

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, 9.6 hours before the alert went out and 108 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: 115 J/kg
Mixed-layer CIN: -294 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 76 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.

567 
WGUS53 KILX 190934
FFWILX
ILC049-173-191530-
/O.NEW.KILX.FF.W.0041.110619T0934Z-110619T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
434 AM CDT SUN JUN 19 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EFFINGHAM COUNTY IN SOUTH CENTRAL ILLINOIS...
  SOUTHERN SHELBY COUNTY IN CENTRAL ILLINOIS...

* UNTIL 1030 AM CDT

* AT 429 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE   
  WARNED AREA. DOPPLER RADAR HAS ESTIMATED UP TO ONE AND A HALF      
  INCHES HAS FALLEN IN THE LAST HOUR OVER PORTIONS OF THE WARNED     
  AREA. ADDITIONAL HEAVY RAINFALL OF ONE TO TWO INCHES IS POSSIBLE   
  OVER THE NEXT COUPLE OF HOURS IN THE SAME AREA. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  EFFINGHAM...SHELBYVILLE...ALTAMONT...BEECHER CITY...COWDEN...
  DIETERICH...EDGEWOOD...LAKEWOOD...MONTROSE...SHUMWAY...            
  STEWARDSON...TEUTOPOLIS...TOWER HILL AND WATSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3892 8881 3921 8881 3921 8911 3924 8914
      3935 8914 3935 8903 3942 8902 3942 8847
      3918 8848 3917 8837 3891 8837

$$

AUTEN

3 follow-up statements

702 
WGUS53 KILX 191518
FFWILX
ILC049-173-191830-
/O.EXT.KILX.FF.W.0041.000000T0000Z-110619T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
1018 AM CDT SUN JUN 19 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  EFFINGHAM COUNTY IN SOUTH CENTRAL ILLINOIS...
  SOUTHERN SHELBY COUNTY IN CENTRAL ILLINOIS...

* UNTIL 130 PM CDT

* AT 1013 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED AN AREA OF MODERATE TO HEAVY RAIN TO MOVE THROUGH IN     
  ADDITION TO AN AREA ALREADY INUNDATED WITH PRECIPITATION THIS      
  MORNING.  EMERGENCY MANAGEMENT HAS REPORTED MANY ROADS IN 
  SOUTHERN SHELBY COUNTY TO BE FLOODED AND ROUTE 128 SOUTH OF 
  SHELBYVILLE TO BE CLOSED.  WATER STILL FLOWING OVER MANY OF THE 
  ROADS AS WELL. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  EFFINGHAM...SHELBYVILLE...ALTAMONT...BEECHER CITY...COWDEN...
  DIETERICH...EDGEWOOD...LAKEWOOD...MONTROSE...SHUMWAY...  
  STEWARDSON...TEUTOPOLIS...TOWER HILL AND WATSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...
OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A
SMALL ONE...ON FOOT OR IN A VEHICLE.

&&

LAT...LON 3892 8881 3921 8881 3921 8911 3924 8914
      3935 8914 3935 8903 3942 8902 3942 8847
      3918 8848 3917 8837 3891 8837

$$

HJS

947 
WGUS73 KILX 191604
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1104 AM CDT SUN JUN 19 2011

ILC049-173-191830-
/O.CON.KILX.FF.W.0041.000000T0000Z-110619T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SHELBY IL-EFFINGHAM IL-
1104 AM CDT SUN JUN 19 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EFFINGHAM AND SOUTHERN
SHELBY COUNTIES UNTIL 130 PM CDT...

AT 1103 AM CDT...EMERGENCY MANAGEMENT HAS REPORTED MANY ROADS IN   
SOUTHERN SHELBY COUNTY TO BE FLOODED AND ROUTE 128 SOUTH OF   
SHELBYVILLE TO HAVE WATER ACROSS IT IN SEVERAL LOCATIONS. WATER 
STILL FLOWING OVER MANY OF THE ROADS IN THE SOUTHERN PORTION OF THE 
COUNTY AS WELL. 

SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
EFFINGHAM...SHELBYVILLE...ALTAMONT...BEECHER CITY...COWDEN...
DIETERICH...EDGEWOOD...LAKEWOOD...MONTROSE...SHUMWAY...STEWARDSON...
TEUTOPOLIS...TOWER HILL AND WATSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.

&&

LAT...LON 3892 8881 3921 8881 3921 8911 3924 8914
      3935 8914 3935 8903 3942 8902 3942 8847
      3918 8848 3917 8837 3891 8837

$$

890 
WGUS73 KILX 191822
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
122 PM CDT SUN JUN 19 2011

ILC049-173-191837-
/O.EXP.KILX.FF.W.0041.000000T0000Z-110619T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SHELBY IL-EFFINGHAM IL-
122 PM CDT SUN JUN 19 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EFFINGHAM AND
SOUTHERN SHELBY COUNTIES WILL BE ALLOWED TO EXPIRE AT 130 PM CDT...

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 3892 8881 3921 8881 3921 8911 3924 8914
      3935 8914 3935 8903 3942 8902 3942 8847
      3918 8848 3917 8837 3891 8837

$$

HJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 7:25 PM CDT	Flash Flood Warning	ILX	Sangamon	12 hr
Jun 18, 10:33 PM CDT	Areal Flood Warning	ILX	Morgan, Sangamon	6 hr
Jun 19, 1:09 AM CDT	Special Weather Statement	ILX	Morgan, Scott	66 min
Jun 19, 4:35 AM CDT	Areal Flood Warning	ILX	Morgan, Sangamon	14 hr
Jun 19, 5:24 AM CDT	Severe Thunderstorm Warning	ILX	Crawford, Lawrence	36 min
Jun 19, 7:16 AM CDT	Flash Flood Warning	ILX	Sangamon	7 hr
Jun 19, 9:16 AM CDT	Flash Flood Warning	ILX	Scott	12 hr
Jun 19, 9:53 AM CDT	Areal Flood Advisory	ILX	Cass, Morgan	6 hr
Jun 19, 10:29 AM CDT	River Flood Warning	ILX	Lawrence	69 hr
Jun 19, 2:29 PM CDT	Flash Flood Watch	ILX	Sangamon	15 hr
Jun 19, 6:34 PM CDT	Areal Flood Warning	ILX	Morgan	12 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.