Alert archive / Illinois / Flash Flood Warnings in 2011

Flash Flood Warning 21, NWS Lincoln, IL

May 13, 2011Tazewell County, Illinois

NWS Lincoln, IL issued this flash flood warning at May 13, 2011, 7:28 PM CDT for Tazewell County, Illinois. It was in force for 3 hr. 1 report 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: May 13, 2011, 7:28 PM CDT (00:28 UTC)
Expired: May 13, 2011, 10:30 PM CDT
In force: 3 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

County Tazewell County, IL

The radar

The Lincoln radar (KILX), 50 km from the middle of the area, began a volume at 00:31 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
May 13, 7:28 PM CDT	FLOOD	E Morton, IL	MUD CREEK OVER FLOWING BANKS...FLOWING OVER ILLINOIS ROUTE 150. FROM COUNTY EMA.

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 81 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: 594 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 998 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 89 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

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

561 
WGUS53 KILX 140028
FFWILX
ILC179-140330-
/O.NEW.KILX.FF.W.0021.110514T0028Z-110514T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
728 PM CDT FRI MAY 13 2011

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN TAZEWELL COUNTY IN CENTRAL ILLINOIS...

* UNTIL 1030 PM CDT

* AT 724 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RADAR ESTIMATED BETWEEN 2 AND 3.75 INCHES OF RAIN 
  HAS FALLEN OVER PARTS OF EASTERN TAZEWELL COUNTY FROM MORTON TO
  TREMONT EAST IN THE PAST TWO HOURS. AN ADDITIONAL 1 TO 2 INCHES
  OF RAIN IS POSSIBLE OVER EASTERN TAZEWELL COUNTY THROUGH 9 PM.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...DEER
  CREEK...HOPEDALE...MACKINAW...MINIER...MORTON AND WASHINGTON.

TAZEWELL COUNTY EMERGENCY MANAGER REPORT FLOODING OF SOME STREETS
IN TREMONT NORTH OF MACKINAW ON ALLENTOWN AND WASHINGTON ROADS AND 
EAST SIDE OF MORTON AT 720 PM. MUD CREEK IS OVERFLOWING ITS BANKS
AT ROUTE 150 A HALF MILE EAST OF MORTON AT 728 PM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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 4075 8934 4062 8933 4058 8928 4037 8927
      4037 8948 4074 8949

$$

HUETTL

2 follow-up statements

115 
WGUS73 KILX 140126
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
826 PM CDT FRI MAY 13 2011

ILC179-140330-
/O.CON.KILX.FF.W.0021.000000T0000Z-110514T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TAZEWELL IL-
826 PM CDT FRI MAY 13 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EASTERN TAZEWELL COUNTY
UNTIL 1030 PM CDT...

AT 823 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL CONTINUING ACROSS THE WARNED 
AREA. RAINFALL AMOUNTS OF 3 TO 4 INCHES HAVE ALREADY OCCURRED...AND 
ADDITIONAL THUNDERSTORMS WILL AFFECT THE AREA THIS EVENING.

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
DEER CREEK...HOPEDALE...MACKINAW...MINIER...MORTON AND WASHINGTON.

MUD CREEK WAS REPORTED TO BE OVER ITS BANKS AND FLOWING ACROSS ROUTE 
50 JUST EAST OF MORTON. OTHER STREAMS ARE ALSO LIKELY TO FLOOD WITH 
THE ADDITIONAL EXPECTED RAINFALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN LINCOLN.

&&

LAT...LON 4075 8934 4062 8933 4058 8928 4037 8927
      4037 8948 4074 8949

$$

CHURCHILL

262 
WGUS73 KILX 140328
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1028 PM CDT FRI MAY 13 2011

ILC179-140343-
/O.EXP.KILX.FF.W.0021.000000T0000Z-110514T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TAZEWELL IL-
1028 PM CDT FRI MAY 13 2011

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EASTERN TAZEWELL
COUNTY WILL BE ALLOWED TO EXPIRE AT 1030 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 4075 8934 4062 8933 4058 8928 4037 8927
      4037 8948 4074 8949

$$

CHURCHILL

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 8:50 PM CDT	Flash Flood Warning	ILX	Christian	2 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.