Alert archive / Illinois / Flash Flood Warnings in 2013

Flash Flood Warning 13, NWS Lincoln, IL

May 2, 2013Coles County, Illinois

NWS Lincoln, IL issued this flash flood warning at May 2, 2013, 4:23 PM CDT for Coles 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 2, 2013, 4:23 PM CDT (21:23 UTC)
Expired
May 2, 2013, 7:30 PM CDT
In force
3 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

County Coles County, IL

The radar

The Lincoln radar (KILX), 118 km from the middle of the area, began a volume at 21:27 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
May 2, 6:53 PM CDTHEAVY RAIN 2.444 E Mattoon, ILSINCE 3 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 12:00Z, 9.4 hours before the alert went out and 77 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 12:00Z on 2013-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 102 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 12:00Z on 2013-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 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
102 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
1567 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

229 
WGUS53 KILX 022123
FFWILX
ILC029-030030-
/O.NEW.KILX.FF.W.0013.130502T2123Z-130503T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
423 PM CDT THU MAY 2 2013

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 730 PM CDT

* AT 421 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. RADAR ESTIMATED 2 TO 2.75 INCHES OF RAIN OVER CENTRAL
  PARTS OF COLES COUNTY SINCE 3 PM WITH THE HEAVIEST AMOUNTS NEAR THE
  MATTOON AIRPORT. ANOTHER THUNDERSTORM WILL PRODUCE 1 TO 2 INCHES OF
  RAIN OVER CENTRAL COLES COUNTY THROUGH 6 PM AS IT DRIFTS NORTH AT
  15 MPH. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CHARLESTON...MATTOON...COOKS MILL...HUMBOLDT...LERNA AND RARDIN.

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 3962 8809 3938 8810 3938 8843 3961 8841

$$

KMH
2 follow-up statements
406 
WGUS73 KILX 022348
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
648 PM CDT THU MAY 2 2013

ILC029-030030-
/O.CON.KILX.FF.W.0013.000000T0000Z-130503T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COLES IL-
648 PM CDT THU MAY 2 2013

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CENTRAL COLES COUNTY
UNTIL 730 PM CDT...

AT 645 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
DOPPLER RADAR ESTIMATED BETWEEN 2.5 AND 4.5 INCHES OF RAIN FELL SINCE
3 PM OVER CENTRAL COLES COUNTY BETWEEN MATTOON AND CHARLESTON WITH
THE HEAVIEST AMOUNTS JUST EAST OF A COLES COUNTY AIRPORT TO LERNA
LINE. AN ADDITIONAL HALF TO 1 INCH OF RAIN IS POSSIBLE BY 730 PM
OVER THE NORTHERN HALF OF COLES COUNTY WITH THUNDERSTORMS. 

RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...
CHARLESTON...MATTOON...HUMBOLDT...LERNA AND RARDIN.

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 3962 8809 3938 8810 3938 8843 3961 8841

$$

KMH
938 
WGUS73 KILX 030026
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
726 PM CDT THU MAY 2 2013

ILC029-030041-
/O.EXP.KILX.FF.W.0013.000000T0000Z-130503T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COLES IL-
726 PM CDT THU MAY 2 2013

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CENTRAL COLES
COUNTY WILL BE ALLOWED TO EXPIRE AT 730 PM CDT...

EXCESS RUNOFF FROM HEAVY RAIN WAS DIMINISHING 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 3962 8809 3938 8810 3938 8843 3961 8841

$$

SHIMON

The office that day

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

IssuedProductOfficeCountiesLasted
May 2, 2:07 PM CDTSevere Thunderstorm WarningILXChampaign, Douglas, Piatt23 min
May 2, 2:30 PM CDTSevere Thunderstorm WarningILXChampaign, Piatt30 min
May 2, 3:41 PM CDTSpecial Weather StatementILXColes34 min
May 2, 5:50 PM CDTFlash Flood WarningILXCumberland3 hr

Nearby

Flash Flood Warnings in Illinois, 2013Every 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.