Alert archive / Illinois / Flash Flood Warnings in 2014

Flash Flood Warning 27, NWS St. Louis, MO

October 2, 20145 counties in Illinois; Lincoln County, Missouri

NWS St. Louis, MO issued this flash flood warning at Oct 2, 2014, 11:09 AM CDT for 5 counties in Illinois; Lincoln County, Missouri. It was in force for 6 hr. 7 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
Oct 2, 2014, 11:09 AM CDT (16:09 UTC)
Expired
Oct 2, 2014, 5:00 PM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Calhoun County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Montgomery County, IL, Lincoln County, MO

The radar

The St Louis radar (KLSX), 43 km from the middle of the area, began a volume at 16:11 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
Oct 2, 11:30 AM CDTFLASH FLOOD1 S Medora, IL6.53 INCHES STORM TOTAL SO FAR. 0.98 INCH OF RAIN SINCE 730 AM. WIDESPREAD FLOODING...DITCHES OVERFLOWING...ALL BRANCHES AND CREEKS ARE OUT OF THEIR BANKS.
Oct 2, 11:30 AM CDTHEAVY RAIN 6.531 S Medora, IL6.53 INCHES STORM TOTAL SO FAR. 0.98 INCH OF RAIN SINCE 730 AM. WIDESPREAD FLOODING...DITCHES OVERFLOWING...ALL BRANCHES AND CREEKS ARE OUT OF THEIR BANKS.
Oct 2, 12:00 PM CDTFLASH FLOODHardin, ILMANY ROADS STILL FLOODED ACROSS THE COUNTY.
Oct 2, 12:00 PM CDTFLASH FLOODJerseyville, ILROADS FLOODED EARLIER TODAY...BUT NO PROBLEMS WITH ROADS NOW. NO CURRENT ROAD CLOSURES.
Oct 2, 12:00 PM CDTFLASH FLOODTroy, MOSOME SECONDARY ROADS STILL CLOSED DUE TO FLOODING...INCLUDING HIGHWAY H NEAR THE CUIVRE RIVER BRIDGE.
Oct 2, 1:47 PM CDTHEAVY RAIN 5.45Plainview, IL
Oct 2, 5:00 PM CDTHEAVY RAIN 6.641 S Medora, ILSTORM TOTAL

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, 4.2 hours before the alert went out and 204 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 2014-10-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2014-10-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1094 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
265 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.

242 
WGUS53 KLSX 021609
FFWLSX
ILC013-061-083-117-135-MOC113-022200-
/O.NEW.KLSX.FF.W.0027.141002T1609Z-141002T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1109 AM CDT THU OCT 2 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CALHOUN COUNTY IN SOUTHWEST ILLINOIS...
  JERSEY COUNTY IN SOUTHWEST ILLINOIS...
  LINCOLN COUNTY IN EAST CENTRAL MISSOURI...
  MACOUPIN COUNTY IN SOUTHWEST ILLINOIS...
  NORTHERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS...
  SOUTHERN GREENE COUNTY IN SOUTHWEST ILLINOIS...

* UNTIL 500 PM CDT

* AT 1107 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE 
  WARNED AREA. DOPPLER RADAR ESTIMATED THAT A BAND OF 6 TO 8 INCHES
  OF RAIN HAS FALLEN ALONG A LINE FROM TROY MISSOURI TO CARLINVILLE
  ILLINOIS. ADDITIONAL HEAVY RAINFALL IS OCCURRING WHICH WILL ENHANCE
  FLOODING WHICH IS ALREADY OCCURRING.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CARLINVILLE...ELSBERRY...GILLESPIE...JERSEYVILLE...TROY...VIRDEN...
  BRIGHTON...CARROLLTON...DAVIS...FARMERSVILLE...GIRARD...
  GREENFIELD...HARDIN...HAWK POINT...KEMPER...MOSCOW MILLS...OLD
  KANE...PALMYRA...RAYMOND...SHIPMAN...WHITE OAK AND WINFIELD.

THIS WARNING INCLUDES BEAVER DAM STATE PARK...CUIVRE RIVER STATE 
PARK...LAKE LOU YAEGER AND PERE MARQUETTE STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 55 IN ILLINOIS FROM EXIT 52 TO EXIT 63.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

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.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. TURN
AROUND... DONT DROWN.

&&

LAT...LON 3900 9004 3900 9027 3894 9069 3891 9072
      3893 9074 3892 9079 3888 9082 3889 9095
      3887 9096 3887 9110 3893 9111 3893 9119
      3910 9117 3923 9089 3922 9072 3952 8997
      3953 8953 3936 8953 3934 8933

$$

CARNEY

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 1, 11:12 PM CDTAreal Flood AdvisoryLSXGreene, Jersey, Macoupin3 hr
Oct 2, 2:14 AM CDTSevere Thunderstorm WarningLSXCalhoun, Greene, Jersey, Pike26 min
Oct 2, 3:01 AM CDTAreal Flood AdvisoryLSXCalhoun, Greene, Jersey, Macoupin, Montgomery6 hr
Oct 2, 8:47 AM CDTAreal Flood AdvisoryLSXCalhoun, Greene, Jersey, Macoupin, Montgomery6 hr
Oct 2, 12:53 PM CDTSevere Thunderstorm WarningLSXClinton, Madison, Saint Clair52 min
Oct 2, 3:58 PM CDTSevere Thunderstorm WarningLSXMadison, Monroe, Saint Clair32 min
Oct 2, 4:56 PM CDTFlash Flood WarningLSXCalhoun, Greene, Jersey, Macoupin, Montgomery6 hr
Oct 1, 7:11 PM CDTTornado WarningLSXCole, Moniteau49 min
Oct 1, 7:57 PM CDTSevere Thunderstorm WarningLSXCole, Osage48 min
Oct 1, 9:42 PM CDTRiver Flood WarningLSXMarion47 hr
Oct 2, 1:42 AM CDTSevere Thunderstorm WarningLSXAudrain, Lincoln, Montgomery, Pike, Ralls48 min
Oct 2, 2:10 AM CDTSevere Thunderstorm WarningLSXLincoln, Montgomery, Saint Charles, Warren27 min
Oct 2, 6:32 AM CDTRiver Flood WarningLSXLincoln66 hr
Oct 2, 7:11 AM CDTAreal Flood AdvisoryLSXBoone, Moniteau3 hr
Oct 2, 9:13 AM CDTRiver Flood WarningLSXLincoln4 days
Oct 2, 9:43 AM CDTAreal Flood AdvisoryLSXBoone, Moniteau6 hr
Oct 2, 10:07 AM CDTRiver Flood WarningLSXSaint Charles53 hr
Oct 2, 10:17 AM CDTRiver Flood WarningLSXGasconade, Montgomery6 days
Oct 2, 2:24 PM CDTSevere Thunderstorm WarningLSXCrawford51 min
Oct 2, 2:39 PM CDTSevere Thunderstorm WarningLSXCrawford, Franklin51 min
Oct 2, 3:14 PM CDTSevere Thunderstorm WarningLSXFranklin, Washington31 min
Oct 2, 3:22 PM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson, Saint Louis38 min

Nearby

Flash Flood Warnings in Illinois, 2014Flash Flood Warnings in Missouri, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.