Alert archive / Illinois / Flash Flood Warnings in 2014

Flash Flood Warning 21, NWS Lincoln, IL

July 12, 2014Champaign County, McLean County, Piatt County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jul 12, 2014, 8:53 AM CDT for Champaign County, McLean County, Piatt County, Illinois. It was in force for 6 hr. 22 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 12, 2014, 8:53 AM CDT (13:53 UTC)
Expired: Jul 12, 2014, 3:00 PM CDT
In force: 6 hr
Issued by: NWS Lincoln, IL
Area: Storm-based polygon
Flood severity: None

Counties Champaign County, IL, McLean County, IL, Piatt County, IL

The radar

The Lincoln radar (KILX), 80 km from the middle of the area, began a volume at 13:56 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
Jul 12, 8:54 AM CDT	FLASH FLOOD	1 Ene Champaign, IL	SEVERAL STREETS IN CHAMPAIGN FLOODED WITH 6 TO 12 INCHES OF WATER. LAW ENFORCEMENT REPORTS WATER OVER ROADS AT NEIL STREET AND KIRBY, INTERSECTION OF COLUMBIA AND MARKET, AND THE VINE STEET VIADUCT. CUNNINGHAM VIADUCT ALSO CLOSED DUE TO FLOODING.
Jul 12, 9:25 AM CDT	HEAVY RAIN 4.9	Mahomet, IL	REPORT VIA FACEBOOK
Jul 12, 9:30 AM CDT	HEAVY RAIN 4.1	1 N Savoy, IL	RAINFALL THIS MORNING...SWOP REPORT.
Jul 12, 9:45 AM CDT	FLASH FLOOD	Champaign, IL	SEVERAL STRETS CLOSED DUE TO FLOODING. INCLUDES BRADLEY WESTBOUND AT PROSPECT, NEIL ST FROM HESSEL BLVD TO FOX DRIVE.
Jul 12, 10:00 AM CDT	FLASH FLOOD	Mahomet, IL	ROUTE 47 BETWEEN GIBSON CITY AND MAHOMET WITH MULTIPLE SPOTS OF DEEP FLOODING ACROSS THE ROAD. PUBLIC REPORT VIA WCIA FACEBOOK PAGE
Jul 12, 10:00 AM CDT	HEAVY RAIN 3.08	2 W Sidney, IL	APRS MESONET
Jul 12, 10:00 AM CDT	HEAVY RAIN 4.35	5 Ese Champaign, IL	APRS MESONET
Jul 12, 10:00 AM CDT	HEAVY RAIN 4.8	Sw Champaign, IL	PUBLIC REPORT VIA WCIA FACEBOOK PAGE
Jul 12, 10:00 AM CDT	HEAVY RAIN 5.5	Foosland, IL	PUBLIC REPORT VIA WCIA FACEBOOK PAGE
Jul 12, 10:10 AM CDT	HEAVY RAIN 6.5	Lake Of The Woods, IL	TOTAL SINCE 6 AM. PUBLIC REPORT VIA TWITTER
Jul 12, 10:15 AM CDT	HEAVY RAIN 6	Mahomet, IL	PUBLIC REPORT VIA WCIA FACEBOOK PAGE
Jul 12, 10:35 AM CDT	HEAVY RAIN 2.5	Bement, IL	PUBLIC REPORT VIA WCIA FACEBOOK PAGE
Jul 12, 10:50 AM CDT	HEAVY RAIN 4.47	1 Sse Urbana, IL	STORM TOTAL, WITH 4.33 INCHES IN LAST 4 HOURS.
Jul 12, 11:00 AM CDT	HEAVY RAIN 4.28	Se Urbana, IL	RAIN HAS STOPPED
Jul 12, 11:15 AM CDT	HEAVY RAIN 4.34	2 Ene Philo, IL
Jul 12, 11:30 AM CDT	FLASH FLOOD	1 W Fisher, IL	US-136 FLOODED. REPORT VIA TWITTER
Jul 12, 11:30 AM CDT	FLASH FLOOD	Mansfield, IL	WATER OVER US-150 FROM MANSFIELD TO MAHOMET. PUBLIC REPORT VIA TWITTER
Jul 12, 11:30 AM CDT	HEAVY RAIN 7	Lake Of The Woods, IL	PUBLIC REPORT RELAYED VIA UIUC CAMPUS TV STATION
Jul 12, 11:38 AM CDT	HEAVY RAIN 5.18	Champaign, IL	INTERSECTION OF MCKINLEY AND PARK AVE, WHICH IS ALSO COVERED BY A FOOT OF WATER. SWOP REPORT
Jul 12, 11:48 AM CDT	FLASH FLOOD	Mansfield, IL	US-150 CLOSED EAST OF MANSFIELD DUE TO FLOODING. REPORTED BY IDOT
Jul 12, 1:00 PM CDT	HEAVY RAIN 2.77	Willard Airport, IL	STORM TOTAL.
Jul 12, 1:00 PM CDT	HEAVY RAIN 5.7	Mansfield, IL	PUBLIC REPORT VIA WCIA FACEBOOK PAGE

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, 1.9 hours before the alert went out and 25 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: 1263 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 908 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

Open this sounding in Storm Lab

The text

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

072 
WGUS53 KILX 121353
FFWILX
ILC019-113-147-122000-
/O.NEW.KILX.FF.W.0021.140712T1353Z-140712T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
853 AM CDT SAT JUL 12 2014

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 300 PM CDT SATURDAY

* AT 849 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED SLOW
  MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED   
  AREA. 3 TO 4 INCHES OF RAINFALL HAS BEEN REPORTED THROUGHOUT THE 
  WARNED AREA WITH MORE RAINFALL EXPECTED IN THE NEXT SEVERAL HOURS.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CHAMPAIGN...MONTICELLO...RANTOUL...BEMENT...BROADLANDS...COLFAX...
  FISHER...GIFFORD...HOMER...LAKE OF THE WOODS...MAHOMET...
  MANSFIELD...OGDEN...PESOTUM...PHILO...SAVOY...SAYBROOK...SEYMOUR...
  SIDNEY...ST. JOSEPH...THOMASBORO...TOLONO...URBANA AND WHITE HEATH.

LAW ENFORCEMENT HAS REPORTED WATER OVER THE ROADS WITHIN CHAMPAIGN AT 
NEIL STREET AND KIRBY...AS WELL AS THE INTERSECTION OF COLUMBIA AND 
MARKET...AND THE VINE STREET VIADUCT IN URBANA IS ALSO UNDERWATER. 
STANDING WATER OVER ROADS AND IN YARDS IN BEMENT...AND MONTICELLO.   

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.

&&

LAT...LON 3988 8794 3988 8862 4020 8865 4028 8858
      4029 8866 4075 8870 4075 8858 4062 8857
      4062 8846 4040 8845 4040 8794

$$

HJS

3 follow-up statements

454 
WGUS73 KILX 121639
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1139 AM CDT SAT JUL 12 2014

ILC019-113-147-122000-
/O.CON.KILX.FF.W.0021.000000T0000Z-140712T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCLEAN IL-PIATT IL-CHAMPAIGN IL-
1139 AM CDT SAT JUL 12 2014

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CHAMPAIGN...EASTERN
PIATT AND EASTERN MCLEAN COUNTIES UNTIL 300 PM CDT...

AT 1135 AM CDT...THE PUBLIC REPORTED THAT FLASH FLOODING WAS 
OCCURRING IN MAHOMET...CHAMPAIGN...URBANA...AND MANY ROADS AND 
FIELDS IN THE AREA.  

6 INCHES OF RAINFALL REPORTED IN MAHOMET...6.5 INCHES IN LAKE OF THE 
WOODS...AND MANY REPORTS FROM 4 TO 5 INCHES ACROSS CHAMPAIGN URBANA. 
PUBLIC HAS REPORTED SIGNIFICANT WATER OVER ROADS IN THE AREAS SUCH AS 
HIGHWAY 150 BETWEEN MANSFIELD AND MAHOMET...AND HIGHWAY 47 NORTH OF 
MAHOMET. 5.18 INCHES OF RAIN REPORTED AT THE INTERSECTION OF 
MCKINLEY AND PARK AVENUE. SAME INTERSECTION IS COVERED BY UP TO A 
FOOT OF WATER.

SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
CHAMPAIGN...MONTICELLO...RANTOUL...BEMENT...BROADLANDS...COLFAX...
FISHER...GIFFORD...HOMER...LAKE OF THE WOODS...MAHOMET...MANSFIELD...
OGDEN...PESOTUM...PHILO...SAVOY...SAYBROOK...SEYMOUR...SIDNEY...ST.
JOSEPH...THOMASBORO...TOLONO...URBANA AND WHITE HEATH.

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.

&&

LAT...LON 3988 8794 3988 8862 4020 8865 4028 8858
      4029 8866 4075 8870 4075 8858 4062 8857
      4062 8846 4040 8845 4040 8794

$$

HJS

675 
WGUS73 KILX 121719
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
1219 PM CDT SAT JUL 12 2014

ILC019-113-147-122000-
/O.CON.KILX.FF.W.0021.000000T0000Z-140712T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCLEAN IL-PIATT IL-CHAMPAIGN IL-
1219 PM CDT SAT JUL 12 2014

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CHAMPAIGN...EASTERN
PIATT AND EASTERN MCLEAN COUNTIES UNTIL 300 PM CDT...

AT 1215 PM CDT...ILLINOIS DEPARTMENT OF TRANSPORTATION HAS CLOSED 
HIGHWAY 150 ONE HALF MILE EAST OF MANSFIELD.

THE PUBLIC REPORTED THAT FLASH FLOODING WAS OCCURRING IN 
MAHOMET...CHAMPAIGN...URBANA...AND MANY ROADS AND FIELDS IN THE 
AREA. 

6 INCHES OF RAINFALL REPORTED IN MAHOMET...6.5 INCHES IN LAKE OF THE 
WOODS...AND MANY REPORTS FROM 4 TO 5 INCHES ACROSS CHAMPAIGN URBANA. 
PUBLIC HAS REPORTED SIGNIFICANT WATER OVER ROADS IN THE AREAS SUCH AS 
HIGHWAY 150 BETWEEN MANSFIELD AND MAHOMET...AND HIGHWAY 47 NORTH OF 
MAHOMET. 5.18 INCHES OF RAIN REPORTED AT THE INTERSECTION OF 
MCKINLEY AND PARK AVENUE. SAME INTERSECTION IS COVERED BY UP TO A 
FOOT OF WATER.

SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
CHAMPAIGN...MONTICELLO...RANTOUL...BEMENT...BROADLANDS...COLFAX...
FISHER...GIFFORD...HOMER...LAKE OF THE WOODS...MAHOMET...MANSFIELD...
OGDEN...PESOTUM...PHILO...SAVOY...SAYBROOK...SEYMOUR...SIDNEY...ST.
JOSEPH...THOMASBORO...TOLONO...URBANA AND WHITE HEATH.

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.

&&

LAT...LON 3988 8794 3988 8862 4020 8865 4028 8858
      4029 8866 4075 8870 4075 8858 4062 8857
      4062 8846 4040 8845 4040 8794

$$

HJS

836 
WGUS73 KILX 122005
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
305 PM CDT SAT JUL 12 2014

ILC019-113-147-122016-
/O.EXP.KILX.FF.W.0021.000000T0000Z-140712T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCLEAN IL-PIATT IL-CHAMPAIGN IL-
305 PM CDT SAT JUL 12 2014

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CHAMPAIGN...EASTERN
PIATT AND EASTERN MCLEAN COUNTIES HAS BEEN ALLOWED TO EXPIRE...

THIS WARNING HAS BEEN REPLACED BY AN AREAL FLOOD WARNING UNTIL 10 PM 
FOR CERTAIN AREAS WITHIN CHAMPAIGN COUNTY...EASTERN MCLEAN COUNTY...
AND NORTHEASTERN PIATT COUNTY. THE HEAVY RAIN HAS TEMPORARILY ENDED AND 
WATERS ARE SLOWLY BEGINNING TO RECEDE.  HOWEVER...MANY AREAS STILL HAVE
WATER ACROSS ROADS AND STANDING IN YARDS AND FIELDS.  MORE RAIN IS 
POSSIBLE LATER TONIGHT.  PLEASE STAY ALERT TO FUTURE WARNINGS AND 
STATEMENTS ACROSS THE AREA. 

IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW 
ENFORCEMENT AGENCY.

LAT...LON 3988 8794 3988 8862 4020 8865 4028 8858
      4029 8866 4075 8870 4075 8858 4062 8857
      4062 8846 4040 8845 4040 8794

$$

HJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 3:00 PM CDT	Areal Flood Warning	ILX	Champaign, McLean, Piatt	7 hr
Jul 12, 3:07 PM CDT	Flash Flood Watch	ILX	Champaign, Coles, DeWitt, Douglas, Edgar, McLean and 4 more	19 hr
Jul 12, 4:30 PM CDT	River Flood Warning	ILX	Piatt	7 days

Nearby

Flash Flood Warnings in Illinois, 2014 Every flash flood warning in 2014

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.