Alert archive / Illinois / Flash Flood Warnings in 2016

Flash Flood Warning 6, NWS Lincoln, IL

May 31, 2016Champaign County, Illinois

NWS Lincoln, IL issued this flash flood warning at May 31, 2016, 5:15 PM CDT for Champaign County, Illinois. It was in force for 3 hr. 2 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
May 31, 2016, 5:15 PM CDT (22:15 UTC)
Expired
May 31, 2016, 8:15 PM CDT
In force
3 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

County Champaign County, IL

The radar

The Lincoln radar (KILX), 93 km from the middle of the area, began a volume at 22:15 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 31, 5:25 PM CDTHEAVY RAIN 2.15Champaign, ILRAINFALL THE PAST 45 MINUTES
May 31, 5:45 PM CDTFLASH FLOODChampaign, ILFLASH FLOODING SEEN ON SEVERAL ROADS INCLUDING WINDSOR...NORTH PROSPECT...AND ST MARYS VIADUCT.

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, 10.3 hours before the alert went out and 30 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 2016-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 318 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 2016-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 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
318 J/kg
Mixed-layer CIN
-100 J/kg
Mixed-layer LCL
1523 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

As transmitted.

570 
WGUS53 KILX 312215
FFWILX
ILC019-010115-
/O.NEW.KILX.FF.W.0006.160531T2215Z-160601T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
515 PM CDT TUE MAY 31 2016

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

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

* UNTIL 815 PM CDT

* AT 514 PM CDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING
  ACROSS THE WARNED AREA. UP TO TWO TO THREE INCHES OF RAIN HAVE
  ALREADY FALLEN. FLASH FLOODING IS ALREADY OCCURRING. A TRAINED
  SPOTTER REPORTED A FOOT OF STANDING WATER ON BRADLEY ROAD IN
  CHAMPAIGN.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CHAMPAIGN...URBANA...SAVOY AND MAHOMET. 

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 57 BETWEEN MILE MARKERS 231 AND 243.
 INTERSTATE 72 BETWEEN MILE MARKERS 180 AND 182.
 INTERSTATE 74 BETWEEN MILE MARKERS 175 AND 185.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4006 8817 4005 8835 4022 8835 4022 8818

$$

SHIMON
2 follow-up statements
110 
WGUS73 KILX 312247
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
547 PM CDT TUE MAY 31 2016

ILC019-010115-
/O.CON.KILX.FF.W.0006.000000T0000Z-160601T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHAMPAIGN-
547 PM CDT TUE MAY 31 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR
CENTRAL CHAMPAIGN COUNTY...

AT 545 PM CDT...EMERGENCY MANAGEMENT REPORTED FLASH FLOODING ON
SEVERAL ROADS IN CHAMPAIGN...INCLUDING WINDSOR...NORTH
PROSPECT...AND THE ST. MARYS VIADUCT. UP TO THREE INCHES OF RAIN
HAVE ALREADY FALLEN. FLASH FLOODING IS ALREADY OCCURRING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CHAMPAIGN. 

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 57 BETWEEN MILE MARKERS 231 AND 243.
 INTERSTATE 72 BETWEEN MILE MARKERS 180 AND 182.
 INTERSTATE 74 BETWEEN MILE MARKERS 175 AND 185.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4006 8817 4005 8835 4022 8835 4022 8818

$$

SHIMON
893 
WGUS73 KILX 010058
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
758 PM CDT TUE MAY 31 2016

ILC019-010107-
/O.CAN.KILX.FF.W.0006.000000T0000Z-160601T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHAMPAIGN-
758 PM CDT TUE MAY 31 2016

...THE FLASH FLOOD WARNING FOR CENTRAL CHAMPAIGN COUNTY IS
CANCELLED...

FLOOD WATERS HAVE RECEDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4006 8817 4005 8835 4022 8835 4022 8818

$$

SHIMON

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 7:21 PM CDTSpecial Weather StatementILXChampaign24 min
May 30, 7:47 PM CDTSpecial Weather StatementILXChampaign13 min
May 31, 1:27 PM CDTSevere Thunderstorm WarningILXMarshall, Woodford33 min

Nearby

Flash Flood Warnings in Illinois, 2016Every flash flood warning in 2016

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.