Alert archive / Illinois / Flash Flood Warnings in 2015

Flash Flood Warning 71, NWS Lincoln, IL

September 18, 2015Fulton County, Knox County, Peoria County, Illinois

NWS Lincoln, IL issued this flash flood warning at Sep 18, 2015, 3:07 PM CDT for Fulton County, Knox County, Peoria County, Illinois. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 18, 2015, 3:07 PM CDT (20:07 UTC)
Expired
Sep 18, 2015, 9:00 PM CDT
In force
6 hr
Issued by
NWS Lincoln, IL
Area
Storm-based polygon
Flood severity
None

Counties Fulton County, IL, Knox County, IL, Peoria County, IL

The radar

The Lincoln radar (KILX), 87 km from the middle of the area, began a volume at 20:09 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.1 hours before the alert went out and 115 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, Davenport, at 12:00Z on 2015-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1154 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, Davenport, at 12:00Z on 2015-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -24 square meters per square second.19395878Sfc1 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
1154 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
467 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-24 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

755 
WGUS53 KILX 182007
FFWILX
ILC057-095-143-190200-
/O.NEW.KILX.FF.W.0071.150918T2007Z-150919T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
307 PM CDT FRI SEP 18 2015

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN PEORIA COUNTY IN CENTRAL ILLINOIS...
  SOUTHEASTERN KNOX COUNTY IN WEST CENTRAL ILLINOIS...
  NORTHERN FULTON COUNTY IN WEST CENTRAL ILLINOIS...

* UNTIL 900 PM CDT
    
* AT 305 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. 1.5 TO TWO INCHES OF RAIN HAS 
  ALREADY FALLEN AND AN ADDITIONAL 1 TO 1.5 INCHES IS POSSIBLE IN 
  THE NEXT HOUR. FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CANTON...FARMINGTON...ELMWOOD...CUBA...AVON...YATES CITY...ST.
  DAVID...FAIRVIEW...LONDON MILLS...MAQUON...DUNFERMLINE...
  SMITHFIELD...NORRIS...BANNER...MARIETTA...ELLISVILLE...FIATT AND
  MIDDLE GROVE.

THIS INCLUDES INTERSTATE 74 BETWEEN MILE MARKERS 68 AND 71.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

&&

LAT...LON 4052 8987 4040 9045 4068 9045 4070 9044
      4088 8993

$$

AUTEN
1 follow-up statement
062 
WGUS73 KILX 190159
FFSILX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LINCOLN IL
859 PM CDT FRI SEP 18 2015

ILC057-095-143-190209-
/O.EXP.KILX.FF.W.0071.000000T0000Z-150919T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PEORIA-KNOX-FULTON-
859 PM CDT FRI SEP 18 2015

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN PEORIA...SOUTHEASTERN
KNOX AND NORTHERN FULTON COUNTIES WILL EXPIRE AT 900 PM CDT...

THE HEAVY RAIN HAS ENDED...AND FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT.

LAT...LON 4052 8987 4040 9045 4068 9045 4070 9044
      4088 8993

$$

BAK

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 18, 4:40 PM CDTFlash Flood WarningILXPeoria, Tazewell, Woodford5 hr
Sep 18, 5:17 PM CDTSpecial Weather StatementILXMcLean28 min
Sep 18, 5:51 PM CDTFlash Flood WarningILXPeoria, Tazewell4 hr

Nearby

Flash Flood Warnings in Illinois, 2015Every flash flood warning in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.