Alert archive / Missouri / Flash Flood Warnings in 2014

Flash Flood Warning 23, NWS St. Louis, MO

September 9, 2014Knox County, Missouri

NWS St. Louis, MO issued this flash flood warning at Sep 9, 2014, 11:54 PM CDT for Knox County, Missouri. It was in force for 6 hr. 3 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 9, 2014, 11:54 PM CDT (04:54 UTC)
Expired
Sep 10, 2014, 6:00 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

County Knox County, MO

The radar

The St Louis radar (KLSX), 197 km from the middle of the area, began a volume at 04:57 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, 4:52 AM CDTFLASH FLOODHurdland, MO6 TO 8 INCHES OF WATER ON STREETS IN HURDLAND
Sep 10, 4:53 AM CDTFLASH FLOODEdina, MOSPOTTER ESTIMATES AT LEAST 12 INCHES OF WATER ON STREETS ON THE SOUTH SIDE OF EDINA. ADDITIONALLY...PARKING LOT OF FARM STORE ON SOUTH SIDE OF EDINA FLOODED WITH AT LEAST 4 TO 6 INCHES OF WATER.
Sep 10, 6:00 AM CDTHEAVY RAIN 7.26Edina, MOSTORM TOTAL

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, 4.9 hours before the alert went out and 215 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°0°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.

620 
WGUS53 KLSX 100454
FFWLSX
MOC103-101100-
/O.NEW.KLSX.FF.W.0023.140910T0454Z-140910T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1154 PM CDT TUE SEP 9 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KNOX COUNTY IN NORTHEAST MISSOURI...

* UNTIL 600 AM CDT WEDNESDAY

* AT 1153 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. HOURLY RAINFALL RATES IN EXCESS OF TWO INCHES ARE     
  EXPECTED WHICH WILL LEAD TO FLASH FLOODING ACROSS KNOX COUNTY.  

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  EDINA...COLONY...GREENSBURG...KNOX CITY AND PLEVNA.

KIRKSVILLE MISSOURI REPORTED OVER TWO INCHES OF RAINFALL IN THE LAST 
HOUR. 

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 4030 9195 4008 9194 4007 9195 4002 9195
      3996 9197 3995 9234 3996 9235 4030 9235

$$

CVKING

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 10, 3:15 AM CDTFlash Flood WarningLSXLewis, Shelby6 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.