Alert archive / Illinois / Flash Flood Warnings in 2014

Flash Flood Warning 21, NWS St. Louis, MO

September 1, 2014Fayette County, Illinois

NWS St. Louis, MO issued this flash flood warning at Sep 1, 2014, 11:57 PM CDT for Fayette County, Illinois. It was in force for 8 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 1, 2014, 11:57 PM CDT (04:57 UTC)
Expired
Sep 2, 2014, 8:00 AM CDT
In force
8 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

County Fayette County, IL

The radar

The Evansville,IN radar (KVWX), 127 km from the middle of the area, began a volume at 04:59 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

Lincoln, IL (KILX), launched 00:00Z, 5.0 hours before the alert went out and 141 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 00:00Z on 2014-09-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 56 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 00:00Z on 2014-09-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
56 J/kg
Mixed-layer CIN
-180 J/kg
Mixed-layer LCL
1331 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
24 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

138 
WGUS53 KLSX 020457
FFWLSX
ILC051-021300-
/O.NEW.KLSX.FF.W.0021.140902T0457Z-140902T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1157 PM CDT MON SEP 1 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 800 AM CDT TUESDAY

* AT 1155 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RADAR ESTIMATES RAINFALLS OF 2 TO 3 INCHES HAVE
  OCCURRED LATE THIS EVENING...ESPECIALLY OVER CENTRAL AND SOUTHERN
  SECTIONS OF THE COUNTY.  AN ADDITIONAL 1 TO 2 INCHES WILL BE 
  POSSIBLE BEFORE THE RAIN TAPERS OFF AFTER MIDNIGHT.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  VANDALIA...BROWNSTOWN...FARINA...RAMSEY...SHOBONIER...ST. ELMO AND
  WRIGHTS CORNER.

THIS WARNING INCLUDES RAMSEY LAKE STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN ILLINOIS FROM EXIT 61 TO EXIT 76.
INTERSTATE 57 NEAR EXIT 135.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3882 8874 3883 8913 3874 8914 3874 8925
      3922 8925 3922 8881 3892 8880 3891 8869
      3883 8869

$$

TRUETT
1 follow-up statement
929 
WGUS73 KLSX 020745
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
245 AM CDT TUE SEP 2 2014

ILC051-021300-
/O.CON.KLSX.FF.W.0021.000000T0000Z-140902T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
FAYETTE IL-
245 AM CDT TUE SEP 2 2014

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR FAYETTE COUNTY UNTIL 800
AM CDT...

AT 239 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
SHOWERS AND ISOLATED THUNDERSTORMS WITH POCKETS OF MODERATE RAINFALL 
ACROSS FAYETTE COUNTY.  THIS MAY PRODUCE ANOTHER ONE-HALF INCH OF 
RAIN OVER THE NEXT HOUR OR SO...ADDING TO THE 3 TO 4 INCHES OF RAIN 
THAT FELL OVER CENTRAL AND SOUTHERN FAYETTE COUNTY MONDAY EVENING.   

SEVERAL STREAM GAGES IN FAYETTE COUNTY...INCLUDING HICKORY CREEK AT 
BLUFF CITY AND HURRICANE CREEK AT MULBERRY GROVE...ARE RISING  
RAPIDLY AND SHOULD PUSH ABOVE FLOOD STAGE SHORTLY.  ITS ALSO 
IMPORTANT TO REMEMBER THAT RUNOFF FROM THE HEAVY RAINFALL WILL 
CONTINUE THE FLASH FLOOD THREAT FOR SEVERAL HOURS AFTER THE RAIN 
COMES TO AN END.

SOME LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING 
INCLUDE...VANDALIA...BROWNSTOWN...FARINA...RAMSEY...SHOBONIER...ST. 
ELMO AND WRIGHTS CORNER.

THIS WARNING INCLUDES RAMSEY LAKE STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN ILLINOIS FROM EXIT 61 TO EXIT 76.
INTERSTATE 57 NEAR EXIT 135.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT 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 3882 8874 3883 8913 3874 8914 3874 8925
      3922 8925 3922 8881 3892 8880 3891 8869
      3883 8869

$$

TRUETT

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 1, 8:44 PM CDTSevere Thunderstorm WarningLSXCalhoun, Jersey46 min
Sep 1, 9:26 PM CDTSevere Thunderstorm WarningLSXJersey, Macoupin, Madison49 min
Sep 1, 11:07 PM CDTTornado WarningLSXMonroe, Saint Clair23 min
Sep 1, 11:14 PM CDTSevere Thunderstorm WarningLSXMadison, Saint Clair25 min
Sep 2, 7:51 AM CDTAreal Flood WarningLSXFayette8 hr

Nearby

Flash Flood Warnings in Illinois, 2014Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.