Alert archive / Missouri / Flash Flood Warnings in 2015

Flash Flood Warning 86, NWS St. Louis, MO

August 22, 2015Callaway County, Montgomery County, Warren County, Missouri

NWS St. Louis, MO issued this flash flood warning at Aug 22, 2015, 8:29 AM CDT for Callaway County, Montgomery County, Warren County, Missouri. It was in force for 6 hr. 1 report 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
Aug 22, 2015, 8:29 AM CDT (13:29 UTC)
Expired
Aug 22, 2015, 2:30 PM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Callaway County, MO, Montgomery County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 78 km from the middle of the area, began a volume at 13:30 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
Aug 22, 12:20 PM CDTFLASH FLOOD2 W Rhineland, MOHIGHWAY 94 CLOSED BOTH DIRECTIONS DUE TO WATER OVER THE ROADWAY

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

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 1.5 hours before the alert went out and 280 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, Springfield, MO at 12:00Z on 2015-08-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 480 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, Springfield, MO at 12:00Z on 2015-08-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
480 J/kg
Mixed-layer CIN
-144 J/kg
Mixed-layer LCL
870 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

022 
WGUS53 KLSX 221329
FFWLSX
MOC027-139-219-221930-
/O.NEW.KLSX.FF.W.0086.150822T1329Z-150822T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
829 AM CDT SAT AUG 22 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHEASTERN CALLAWAY COUNTY IN CENTRAL MISSOURI...
  WARREN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 230 PM CDT SATURDAY
    
* AT 827 AM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING 
  HEAVY RAIN ACROSS THE WARNED AREA. MORE THAN 4 INCHES OF RAIN HAVE 
  FALLEN IN SOME SPOTS AND ADDITIONAL HEAVY RAIN CONTINUES TO FALL. 
  FLASH FLOODING IS EXPECTED.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  FULTON...WARRENTON...WRIGHT CITY...MARTHASVILLE...JONESBURG...
  TRUESDALE...INNSBROOK...CHAMOIS...BIG SPRING...DUTZOW...TRELOAR...
  FORISTELL...MOKANE...RHINELAND...MCKITTRICK...STEEDMAN...
  TEBBETTS...REFORM...PORTLAND AND HOLSTEIN.

THIS INCLUDES INTERSTATE 70 IN MISSOURI BETWEEN EXITS 188 AND 193.
 
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 3890 9190 3882 9096 3859 9097 3862 9115
      3871 9131 3871 9149 3869 9151 3868 9156
      3870 9163 3871 9173 3868 9176 3867 9187
      3861 9193 3857 9205

$$

CARNEY
1 follow-up statement
885 
WGUS73 KLSX 221701
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1201 PM CDT SAT AUG 22 2015

MOC027-139-219-221930-
/O.CON.KLSX.FF.W.0086.000000T0000Z-150822T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTGOMERY MO-CALLAWAY MO-WARREN MO-
1201 PM CDT SAT AUG 22 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM CDT
SATURDAY FOR SOUTHERN MONTGOMERY...SOUTHEASTERN CALLAWAY AND WARREN
COUNTIES...

AT 1157 AM CDT...DOPPLER RADAR INDICATED THAT 3 TO 4 INCHES OF RAIN 
HAD FALLEN ACROSS THE WARNING AREA.  THE HIGHEST AMOUNTS WERE ALONG 
A LINE FROM REFORM TO AMERICUS AND EAST INTO PARTS OF CENTRAL WARREN 
COUNTY.  THE HEAVY RAIN HAS ENDED AT THIS TIME...BUT RUNOFF FROM 
THIS MORNING WILL CONTINUE TO CAUSE FLASH FLOODING INTO THE 
AFTERNOON.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
FULTON...WARRENTON...WRIGHT CITY...MARTHASVILLE...JONESBURG...
TRUESDALE...INNSBROOK...CHAMOIS...BIG SPRING...DUTZOW...TRELOAR...
FORISTELL...MOKANE...RHINELAND...MCKITTRICK...STEEDMAN...TEBBETTS...
REFORM...AMERICUS...PORTLAND AND HOLSTEIN.

THIS INCLUDES INTERSTATE 70 IN MISSOURI BETWEEN EXITS 188 AND 193.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

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

&&

LAT...LON 3890 9190 3882 9096 3859 9097 3862 9115
      3871 9131 3871 9149 3869 9151 3868 9156
      3870 9163 3871 9173 3868 9176 3867 9187
      3861 9193 3857 9205

$$

CARNEY

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 6:47 AM CDTFlash Flood WarningLSXBoone, Callaway4 hr
Aug 22, 2:31 PM CDTAreal Flood WarningLSXMontgomery6 hr
Aug 22, 5:37 PM CDTFlash Flood WarningLSXSainte Genevieve, Saint Francois6 hr

Nearby

Flash 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.