Alert archive / Illinois / Flash Flood Warnings in 2013

Flash Flood Warning 2, NWS Lincoln, IL

April 10, 2013Champaign County, Piatt County, Vermilion County, Illinois

NWS Lincoln, IL issued this flash flood warning at Apr 10, 2013, 4:12 PM CDT for Champaign County, Piatt County, Vermilion County, Illinois. It was in force for 15 hr. 10 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: Apr 10, 2013, 4:12 PM CDT (21:12 UTC)
Expired: Apr 11, 2013, 6:45 AM CDT
In force: 15 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

Counties Champaign County, IL, Piatt County, IL, Vermilion County, IL

The radar

The Lincoln radar (KILX), 101 km from the middle of the area, began a volume at 21:14 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
Apr 10, 6:00 PM CDT	HEAVY RAIN 1.1	W Hoopeston, IL
Apr 10, 6:00 PM CDT	HEAVY RAIN 3.5	5 W Rossville, IL	1.50 INCHES OF RAIN IN THE LAST HOUR.
Apr 10, 9:00 PM CDT	HEAVY RAIN 2.46	3 W Champaign, IL	REPORT FOR BONDVILLE VIA CRN.
Apr 10, 11:00 PM CDT	HEAVY RAIN 1.77	5 Sw Potomac, IL	24-HOUR TOTAL. APRSWXNET SITE
Apr 10, 11:04 PM CDT	HEAVY RAIN 2.29	4 W Champaign, IL	24-HOUR TOTAL. APRSWXNET SITE
Apr 10, 11:59 PM CDT	HEAVY RAIN 2.89	4 Se Seymour, IL	24-HOUR TOTAL. CLIMATE REFERNCE NETWORK SITE
Apr 11, 12:15 AM CDT	HEAVY RAIN 2.6	2 Wsw Champaign, IL	24-HOUR TOTAL, WITH 2.46 INCHES IN LAST 12 HOURS. HADS STATION
Apr 11, 12:55 AM CDT	HEAVY RAIN 1.37	Willard Airport, IL	24-HOUR TOTAL
Apr 11, 5:30 AM CDT	HEAVY RAIN 1.75	Ogden, IL	24 HOUR TOTAL
Apr 11, 6:00 AM CDT	HEAVY RAIN 1.73	Cisco, 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 12:00Z, 9.2 hours before the alert went out and 39 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: 2649 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 701 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 219 m²/s²
Significant tornado parameter: 2.6
Supercell composite: 15.4

Open this sounding in Storm Lab

The text

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

835 
WGUS53 KILX 102112
FFWILX
ILC019-147-183-110300-
/O.NEW.KILX.FF.W.0002.130410T2112Z-130411T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
412 PM CDT WED APR 10 2013

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS...
  PIATT COUNTY IN CENTRAL ILLINOIS...
  VERMILION COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 1000 PM CDT

* AT 411 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE   
  WARNED AREA. RADAR ESTIMATED 1 TO 2 INCHES HAVE ALREADY FALLEN IN 
  PORTIONS OF THE WARNED COUNTIES.  MORE THUNDERSTORMS ARE MOVING INTO 
  THE AREA WITH ADDITIONAL RAINFALL TOTALS OF 2 TO 3 INCHES POSSIBLE.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CHAMPAIGN...DANVILLE...MONTICELLO...RANTOUL...BEMENT...CATLIN...
  CERRO GORDO...FAIRMOUNT...FISHER...FITHIAN...GIFFORD...HOMER...
  HOOPESTON...LAKE OF THE WOODS...MAHOMET...OAKWOOD...OGDEN...
  PESOTUM...PHILO...POTOMAC...RANKIN...ROSSVILLE...SAVOY...SEYMOUR...
  SIDNEY...ST. JOSEPH...THOMASBORO...TILTON...TOLONO AND URBANA.

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 4003 8754 3998 8793 3988 8846 3980 8848
      3980 8873 4005 8874 4009 8848 4040 8845
      4040 8796 4049 8793 4049 8752

$$

HJS

3 follow-up statements

299 
WGUS73 KILX 102311
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
611 PM CDT WED APR 10 2013

ILC019-147-183-110300-
/O.CON.KILX.FF.W.0002.000000T0000Z-130411T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIATT IL-VERMILION IL-CHAMPAIGN IL-
611 PM CDT WED APR 10 2013

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CHAMPAIGN...VERMILION
AND PIATT COUNTIES UNTIL 1000 PM CDT...

AT 607 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
A TRAINED SPOTTER MEASURED 3.50 INCHES OF RAIN 5 MILES WEST OF
ROSSVILLE IN VERMILION COUNTY THIS AFTERNOON...WITH 1.5 INCHES OF
THAT FALLING SINCE 5 PM. THUNDERSTORMS WILL PRODUCE AN ADDITIONAL
1 TO 2 INCHES OF RAIN OVER PARTS OF CHAMPAIGN...VERMILION AND PIATT
COUNTIES THROUGH 10 PM...LEADING TO POSSIBLE FLASH FLOODING. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
CHAMPAIGN...DANVILLE...MONTICELLO...RANTOUL...BEMENT...CATLIN...CERRO
GORDO...FAIRMOUNT...FISHER...FITHIAN...GIFFORD...HOMER...HOOPESTON...
LAKE OF THE WOODS...MAHOMET...OAKWOOD...OGDEN...PHILO...POTOMAC...
RANKIN...ROSSVILLE...SAVOY...SEYMOUR...SIDNEY...ST. JOSEPH...
THOMASBORO...TILTON...TOLONO...URBANA AND WESTVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT AFTER 8 PM 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.

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 4003 8754 3998 8793 3988 8846 3980 8848
      3980 8873 4005 8874 4009 8848 4040 8845
      4040 8796 4049 8793 4049 8752

$$

KMH

387 
WGUS53 KILX 110223
FFWILX
ILC019-147-183-111200-
/O.EXT.KILX.FF.W.0002.000000T0000Z-130411T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
923 PM CDT WED APR 10 2013

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  CHAMPAIGN COUNTY IN EAST CENTRAL ILLINOIS...
  PIATT COUNTY IN CENTRAL ILLINOIS...
  VERMILION COUNTY IN EAST CENTRAL ILLINOIS...

* UNTIL 700 AM CDT THURSDAY

* AT 919 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SHOWERS AND THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. BETWEEN 2 AND 4 INCHES OF RAIN IS ESTIMATED BY RADAR
  ALONG A BEMENT TO CHAMPAIGN TO ROSSVILLE LINE SINCE MID AFTERNOON.
  ANOTHER WIDESPREAD AREA OF SHOWERS AND THUNDERSTORMS WILL SPREAD 
  EAST AND BRING AN ADDITIONAL 1.5 TO 2 INCHES OF RAIN WITH LOCALLY 
  UP TO 3 INCHES THROUGH 3 AM...WHICH COULD LEAD TO ADDITIONAL 
  FLASH FLOODING.  

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CHAMPAIGN...DANVILLE...MONTICELLO...RANTOUL...BEMENT...CATLIN...
  CERRO GORDO...FAIRMOUNT...FISHER...FITHIAN...GIFFORD...HOMER...
  HOOPESTON...LAKE OF THE WOODS...MAHOMET...OAKWOOD...OGDEN...
  PHILO...POTOMAC...RANKIN...ROSSVILLE...SAVOY...SEYMOUR...SIDNEY...
  ST. JOSEPH...THOMASBORO...TILTON...TOLONO...URBANA AND WESTVILLE.

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 4003 8754 3998 8793 3988 8846 3980 8848
      3980 8873 4005 8874 4009 8848 4040 8845
      4040 8796 4049 8793 4049 8752

$$

KMH

032 
WGUS73 KILX 111145
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
645 AM CDT THU APR 11 2013

ILC019-147-183-111200-
/O.CAN.KILX.FF.W.0002.000000T0000Z-130411T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIATT IL-VERMILION IL-CHAMPAIGN IL-
645 AM CDT THU APR 11 2013

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CHAMPAIGN...
VERMILION AND PIATT 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 4003 8754 3998 8793 3988 8846 3980 8848
      3980 8873 4005 8874 4009 8848 4040 8845
      4040 8796 4049 8793 4049 8752

$$

BAK

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 1:11 PM CDT	Tornado Warning	ILX	Douglas, Moultrie, Piatt, Shelby	34 min
Apr 10, 2:27 PM CDT	Special Weather Statement	ILX	Vermilion	33 min
Apr 10, 3:17 PM CDT	Severe Thunderstorm Warning	ILX	Edgar	13 min
Apr 10, 4:58 PM CDT	Special Weather Statement	ILX	Champaign	62 min
Apr 10, 5:35 PM CDT	Special Weather Statement	ILX	Macon, Piatt	40 min
Apr 10, 5:42 PM CDT	Special Weather Statement	ILX	Douglas	63 min
Apr 10, 5:47 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt, Macon, Piatt	43 min
Apr 10, 6:28 PM CDT	Special Weather Statement	ILX	Vermilion	62 min

Nearby

Flash Flood Warnings in Illinois, 2013 Every flash flood warning in 2013

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.