Alert archive / Missouri / Flash Flood Warnings in 2014

Flash Flood Warning 24, NWS St. Louis, MO

September 10, 2014Lewis County, Shelby County, Missouri

NWS St. Louis, MO issued this flash flood warning at Sep 10, 2014, 3:15 AM CDT for Lewis County, Shelby 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
Sep 10, 2014, 3:15 AM CDT (08:15 UTC)
Expired
Sep 10, 2014, 9:00 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Lewis County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 171 km from the middle of the area, began a volume at 08:18 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
Sep 10, 3:45 AM CDTHEAVY RAIN 7.1Lewistown, MO4.70 INCHES BETWEEN MIDNIGHT AND 0330 LOCAL TIME...STILL RAINING
Sep 10, 5:30 AM CDTFLASH FLOODLewistown, MOCOUNTY EM STATES THAT MANY ROADS ARE CLOSED THRUGHOUT THE COUNTY...TOO MANY TO LIST
Sep 10, 5:56 AM CDTHEAVY RAIN 8.1Lewistown, MORAINFALL SINCE TUESDAY EVENING
Sep 10, 6:00 AM CDTHEAVY RAIN 5.53Canton, MOSTORM TOTAL
Sep 10, 7:00 AM CDTHEAVY RAIN 3.72Shelbina, MOSTORM TOTAL
Sep 10, 8:32 AM CDTFLOODMonticello, MOWATER REPORTED OVER THE ROAD IN NUMEROUS LOCATIONS ACROSS LEWIS COUNTY...INCLUDING ON HWY E OFF OF HWY 81...HWY 61 NORTH OF CANTON...HWY 16 EAST OF MONTICELLO...AND HWY D SOUTH OF LABELLE
Sep 10, 8:47 AM CDTFLOODShelbyville, MOMULTIPLE ROAD CLOSURES REPORTED ACROSS SHELBY COUNTY...INCLUDING RT K 1 MILE WEST OF SHELBYVILLE...HWY 151 NORTH OF CLARENCE...RT W...RT J...AND RT N NEAR THE CONSERVATION AREA. WATER WAS REPORTED OVER HWY 168 BETWEEN RT T AND EMDEN.

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, 8.3 hours before the alert went out and 221 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 2014-09-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 162 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 00:00Z on 2014-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 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
162 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
1059 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
102 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.

117 
WGUS53 KLSX 100815
FFWLSX
MOC111-205-101400-
/O.NEW.KLSX.FF.W.0024.140910T0815Z-140910T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
315 AM CDT WED SEP 10 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LEWIS COUNTY IN NORTHEAST MISSOURI...
  SHELBY COUNTY IN NORTHEAST MISSOURI...

* UNTIL 900 AM CDT

* AT 311 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA...
  WITH ESTIMATES OF TWO TO FOUR INCHES OF RAINFALL.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CANTON...SHELBINA...CLARENCE...EMDEN...EWING...LA BELLE...LA
  GRANGE...LEWISTOWN...MAUD...MAYWOOD...SHELBYVILLE AND STEFFENVILLE.

THIS WARNING INCLUDES WAKONDA STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF ONE TO THREE INCHES ARE POSSIBLE IN 
THE WARNED AREA AS THE RAIN WITH THUNDERSTORMS IS EXPECTED TO 
CONTINUE THROUGH MUCH OF THE MORNING. 

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.

&&

LAT...LON 4025 9150 4004 9150 3995 9144 3995 9184
      3966 9185 3966 9218 3960 9219 3961 9229
      3995 9229 3995 9195 4025 9195

$$

TES

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 9:42 PM CDTRiver Flood WarningLSXLewis5 days
Sep 9, 9:42 PM CDTRiver Flood WarningLSXLewis5 days
Sep 9, 11:10 PM CDTRiver Flood WarningLSXSaint Charles37 hr
Sep 9, 11:54 PM CDTFlash Flood WarningLSXKnox6 hr
Sep 10, 5:19 AM CDTSevere Thunderstorm WarningLSXMarion41 min
Sep 10, 8:09 AM CDTRiver Flood WarningLSXMarion4 days
Sep 10, 8:11 AM CDTRiver Flood WarningLSXMarion58 hr
Sep 10, 8:15 AM CDTRiver Flood WarningLSXLincoln48 hr
Sep 10, 8:59 AM CDTAreal Flood WarningLSXLewis, Marion, Ralls, Shelby9 hr
Sep 10, 12:25 PM CDTRiver Flood WarningLSXPike8 days
Sep 10, 12:25 PM CDTRiver Flood WarningLSXLincoln8 days
Sep 10, 12:25 PM CDTRiver Flood WarningLSXSaint Charles8 days
Sep 10, 12:25 PM CDTRiver Flood WarningLSXMarion7 days
Sep 10, 12:25 PM CDTRiver Flood WarningLSXRalls6 days
Sep 10, 12:25 PM CDTRiver Flood WarningLSXPike8 days
Sep 10, 5:59 PM CDTAreal Flood WarningLSXKnox, Lewis, Marion, Monroe, Ralls, Shelby24 hr

Nearby

Flash 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.