Alert archive / Illinois / Flash Flood Warnings in 2015

Flash Flood Warning 52, NWS St. Louis, MO

July 11, 2015Adams County, Brown County, Illinois; Lewis County, Missouri

NWS St. Louis, MO issued this flash flood warning at Jul 11, 2015, 9:58 PM CDT for Adams County, Brown County, Illinois; Lewis 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
Jul 11, 2015, 9:58 PM CDT (02:58 UTC)
Expired
Jul 12, 2015, 4:00 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Adams County, IL, Brown County, IL, Lewis County, MO

The radar

The Lincoln radar (KILX), 146 km from the middle of the area, began a volume at 02:59 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.

What was reported inside it

TimeReportWhereRemark
Jul 11, 9:58 PM CDTFLASH FLOODCoatsburg, ILIL 24 CLOSED BETWEEN COATSBURG AND POLAMA... OVERPASS UNDERWATER
Jul 11, 10:00 PM CDTFLASH FLOODGolden, ILIL 94 CLOSED SOUTH OF GOLDEN... OVERPASS UNDER WATER
Jul 11, 10:01 PM CDTFLASH FLOODLoraine, ILUP TO A FOOT OF WATER OVER IL61 BETWEEN LORAINE AND GOLDEN.
Jul 11, 10:06 PM CDTFLASH FLOODMount Sterling, IL10 RESIDENTS OF AN APARTMENT BUILDIING HAD TO BE EVACUATED DUE TO FLOODING.
Jul 11, 11:14 PM CDTFLASH FLOODLa Grange, MOREPORT RELAYED FROM MARION COUNTY 911. HIGHWAY C AT LA GRANGE COVERED BY 1.5 FEET OF WATER. HIGHWAY B SOUTH OF LA GRANGE ALSO FLOODED.
Jul 12, 12:13 AM CDTFLASH FLOODLa Grange, MOROAD WASHED OUT IN LA GRANGE... 3RD STREET AND PIERCE.
Jul 12, 1:51 AM CDTFLASH FLOODFall Creek, ILCOUNTY EMERGENCY MANAGER REPORTS SOME HOMES FLOODED AND EVACUATIONS TAKING PLACE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.0 hours before the alert went out and 182 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 00:00Z on 2015-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLLFCEL10008507005003002001001 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, Davenport, at 00:00Z on 2015-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
16 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
685 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
174 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

188 
WGUS53 KLSX 120258
FFWLSX
ILC001-009-MOC111-120900-
/O.NEW.KLSX.FF.W.0052.150712T0258Z-150712T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
958 PM CDT SAT JUL 11 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  ADAMS COUNTY IN WEST CENTRAL ILLINOIS...
  BROWN COUNTY IN WEST CENTRAL ILLINOIS...
  LEWIS COUNTY IN NORTHEASTERN MISSOURI...

* UNTIL 400 AM CDT SUNDAY
    
* AT 953 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO 
  BEGIN SHORTLY.  THUNDERSTORMS WITH HIGH RAINFALL RATES CONTINUE TO 
  DEVELOP AND MOVE SOUTHEASTWARD THROUGH THE AREA THIS EVENING.  
  DOPPLER RADAR WAS ESTIMATING RAINFALL AMOUNTS AS HIGH AS 3 TO 5 
  INCHES ACROSS NORTHEAST ADAMS COUNTY BETWEEN LORAINE AND LA 
  PRAIRIE DURING THE PAST THREE HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  QUINCY...CANTON...MOUNT STERLING...CAMP POINT...PAYSON...MENDON...
  CLAYTON...GOLDEN...LEWISTOWN...FALL CREEK...EWING...BEVERLY...
  BUCKHORN...ADAMS...LA GRANGE...KINGSTON...BURTON...URSA...LIBERTY
  AND VERSAILLES.

THIS INCLUDES INTERSTATE 172 BETWEEN EXITS 2 AND 19.
 
THIS WARNING ALSO INCLUDES WAKONDA STATE PARK AND SILOAM SPRINGS
STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4025 9150 4020 9150 4019 9091 4011 9091
      4010 9070 4008 9070 4008 9067 4005 9067
      4003 9061 3998 9060 3999 9052 3997 9051
      3986 9059 3984 9092 3976 9092 3976 9132
      3995 9144 3997 9170 4003 9186 4025 9193

$$

GKS
2 follow-up statements
161 
WGUS73 KLSX 120548
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1248 AM CDT SUN JUL 12 2015

ILC001-009-MOC111-120900-
/O.CON.KLSX.FF.W.0052.000000T0000Z-150712T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS IL-BROWN IL-LEWIS MO-
1248 AM CDT SUN JUL 12 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 AM CDT SUNDAY
FOR ADAMS...BROWN AND LEWIS COUNTIES...

AT 1243 AM CDT...DOPPLER RADAR INDICATED THAT THE THUNDERSTORSMS 
WERE WEAKENING AND SHRINKING IN COVERAGE SO THE HEAVIEST RAIN 
APPEARS TO BE OVER. HOWEVER AN ADDITIONAL HALF INCH OF RAIN IS 
POSSIBLE BEFORE THE STORMS COME TO AN END. ROADS IN ADAMS 
COUNTY...INCLUDING HIGHWAY 24 NEAR COATSBURG AND HIGHWASY 94 SOUTH 
OF GOLDEN HAVE BEEN CLOSED DUE TO FLOODING. IN LEWIS COUNTY HIGHWAY 
C AT LA GRANGE WAS FLOODED AND ROADS HAVE BEEN WASHED OUT IN LA 
GRANGE. 

SOME OTHER LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
QUINCY...CANTON...MOUNT STERLING...CAMP POINT...PAYSON...MENDON... 
CLAYTON...GOLDEN...LEWISTOWN...FALL CREEK...EWING...BEVERLY... 
BUCKHORN...ADAMS...LA GRANGE...KINGSTON...BURTON...URSA...LIBERTY 
AND VERSAILLES.

THIS INCLUDES INTERSTATE 172 BETWEEN EXITS 2 AND 19.
 
THIS WARNING ALSO INCLUDES WAKONDA STATE PARK AND SILOAM SPRINGS
STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4025 9150 4020 9150 4019 9091 4011 9091
      4010 9070 4008 9070 4008 9067 4005 9067
      4003 9061 3998 9060 3999 9052 3997 9051
      3986 9059 3984 9092 3976 9092 3976 9132
      3995 9144 3997 9170 4003 9186 4025 9193

$$

KRAMPER
428 
WGUS73 KLSX 120849
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
349 AM CDT SUN JUL 12 2015

ILC001-009-MOC111-120858-
/O.CAN.KLSX.FF.W.0052.000000T0000Z-150712T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADAMS IL-BROWN IL-LEWIS MO-
349 AM CDT SUN JUL 12 2015

...THE FLASH FLOOD WARNING FOR ADAMS...BROWN AND LEWIS COUNTIES IS
CANCELLED...

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

LAT...LON 4025 9150 4020 9150 4019 9091 4011 9091
      4010 9070 4008 9070 4008 9067 4005 9067
      4003 9061 3998 9060 3999 9052 3997 9051
      3986 9059 3984 9092 3976 9092 3976 9132
      3995 9144 3997 9170 4003 9186 4025 9193

$$

BROWNING

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 7:08 PM CDTFlash Flood WarningLSXAdams, Brown3 hr
Jul 11, 7:35 PM CDTSevere Thunderstorm WarningLSXCalhoun, Greene, Macoupin, Pike40 min
Jul 11, 8:06 PM CDTRiver Flood WarningLSXBrown7 days
Jul 11, 8:15 PM CDTSevere Thunderstorm WarningLSXGreene, Jersey, Macoupin45 min
Jul 11, 9:10 PM CDTSpecial Weather StatementLSXAdams, Brown50 min
Jul 11, 9:39 PM CDTSevere Thunderstorm WarningLSXAdams, Pike39 min
Jul 11, 10:50 PM CDTRiver Flood WarningLSXAdams62 hr
Jul 11, 10:50 PM CDTRiver Flood WarningLSXAdams68 hr
Jul 11, 10:50 PM CDTRiver Flood WarningLSXPike4 days
Jul 11, 10:50 PM CDTRiver Flood WarningLSXPike4 days
Jul 11, 10:50 PM CDTRiver Flood WarningLSXPike5 days
Jul 11, 10:50 PM CDTRiver Flood WarningLSXCalhoun5 days
Jul 11, 11:30 PM CDTSpecial Weather StatementLSXJersey45 min
Jul 12, 2:20 AM CDTAreal Flood AdvisoryLSXPike3 hr
Jul 12, 9:56 AM CDTRiver Flood WarningLSXAdams60 hr
Jul 11, 8:25 PM CDTRiver Flood WarningLSXLewis3 days
Jul 11, 8:25 PM CDTRiver Flood WarningLSXLewis3 days
Jul 11, 11:26 PM CDTFlash Flood WarningLSXKnox, Lewis6 hr
Jul 12, 12:18 AM CDTSpecial Weather StatementLSXRalls42 min
Jul 12, 1:25 AM CDTAreal Flood AdvisoryLSXMarion3 hr
Jul 12, 2:15 AM CDTRiver Flood WarningLSXMarion50 hr
Jul 12, 2:52 AM CDTFlash Flood WarningLSXMarion3 hr
Jul 12, 9:40 AM CDTRiver Flood WarningLSXOsage3 days
Jul 12, 4:19 PM CDTRiver Flood WarningLSXLincoln5 days

Nearby

Flash Flood Warnings in Illinois, 2015Flash Flood Warnings in Missouri, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.