Alert archive / Missouri / Flash Flood Warnings in 2016

Flash Flood Warning 41, NWS St. Louis, MO

August 15, 2016Iron County, Reynolds County, Washington County, Missouri

NWS St. Louis, MO issued this flash flood warning at Aug 15, 2016, 4:54 AM CDT for Iron County, Reynolds County, Washington County, Missouri. It was in force for 6 hr. 2 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
Aug 15, 2016, 4:54 AM CDT (09:54 UTC)
Expired
Aug 15, 2016, 10:45 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
None

Counties Iron County, MO, Reynolds County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 118 km from the middle of the area, began a volume at 09:54 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 15, 6:00 AM CDTHEAVY RAIN 5.2Lesterville, MOLAST 24 HOURS.
Aug 15, 6:00 AM CDTHEAVY RAIN 6Belleview, MO24 HOUR TOTAL

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 00:00Z, 9.9 hours before the alert went out and 275 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 00:00Z on 2016-08-15Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2016-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -45 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
767 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-45 m²/s²
0-3 km storm-relative helicity
-76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

035 
WGUS53 KLSX 150954
FFWLSX
MOC093-179-221-151545-
/O.NEW.KLSX.FF.W.0041.160815T0954Z-160815T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
454 AM CDT MON AUG 15 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN IRON COUNTY IN SOUTHEASTERN MISSOURI...
  NORTHERN REYNOLDS COUNTY IN SOUTHEASTERN MISSOURI...
  SOUTHEASTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 1045 AM CDT

* AT 452 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT
  HIGHWAY 21 AT HIGHWAY 32 WAS FLOODED. BETWEEN ONE AND TWO INCHES
  HAS FALLEN IN THE PAST 3 HOURS. FLASH FLOODING IS EXPECTED TO
  CONTINUE.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  POTOSI...IRONTON...PILOT KNOB...ARCADIA...IRONDALE...
  MINERAL POINT...OATES...BELLEVIEW...GLOVER...CENTERVILLE...
  CALEDONIA...BLACK...HOGAN...CHLORIDE...LESTERVILLE...BELGRADE...
  SHIRLEY AND GRANITE.

THIS ALSO INCLUDES  JOHNSONS SHUT-INS STATE PARK...FORT DAVIDSON
HISTORIC SITE...ELEPHANT ROCKS STATE PARK...AND TAUM SAUK MOUNTAIN
STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3743 9119 3796 9090 3796 9064 3765 9065
      3764 9063 3743 9063

$$

BYRD
2 follow-up statements
287 
WGUS73 KLSX 151404
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
904 AM CDT MON AUG 15 2016

MOC093-179-221-151545-
/O.CON.KLSX.FF.W.0041.000000T0000Z-160815T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IRON MO-REYNOLDS MO-WASHINGTON MO-
904 AM CDT MON AUG 15 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT FOR
NORTHERN IRON...NORTHERN REYNOLDS AND SOUTHEASTERN WASHINGTON
COUNTIES...

EARLIER THIS MORNING...LOCAL LAW ENFORCEMENT REPORTED FLASH FLOODING
IN PORTIONS OF IRON AND WASHINGTON COUNTIES. THE EAST FORK OF THE
BLACK RIVER WAS 2 FEET ABOVE THE BRIDGE WEST OF PILOT KNOB. IN
ADDITION...MOUNTS ROAD BRIDGE OVER THE BIG RIVER WAS UNDER 4 FEET OF
WATER EARLIER THIS MORNING. FLASH FLOODING IS ALREADY OCCURRING.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
POTOSI...IRONTON...PILOT KNOB...ARCADIA...IRONDALE...MINERAL POINT...
OATES...BELLEVIEW...GLOVER...CENTERVILLE...CALEDONIA...BLACK...
HOGAN...CHLORIDE...LESTERVILLE...BELGRADE...SHIRLEY AND GRANITE.

THIS ALSO INCLUDES  JOHNSONS SHUT-INS STATE PARK...FORT DAVIDSON
HISTORIC SITE...ELEPHANT ROCKS STATE PARK...AND TAUM SAUK MOUNTAIN
STATE PARK.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO CROSS FLOODED
ROADS. FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3743 9119 3796 9090 3796 9064 3765 9065
      3764 9063 3743 9063

$$

KD
740 
WGUS73 KLSX 151544
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1044 AM CDT MON AUG 15 2016

MOC093-179-221-151553-
/O.EXP.KLSX.FF.W.0041.000000T0000Z-160815T1545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IRON MO-REYNOLDS MO-WASHINGTON MO-
1044 AM CDT MON AUG 15 2016

...THE FLASH FLOOD WARNING FOR NORTHERN IRON...NORTHERN REYNOLDS AND
SOUTHEASTERN WASHINGTON COUNTIES WILL EXPIRE AT 1045 AM CDT...

THE HEAVY RAIN HAS ENDED. HOWEVER...MINOR FLOODING IS STILL ONGOING
IN THE REGION...THUS AN AREAL FLOOD WARNING HAS BEEN ISSUED TO
REPLACE THE FLASH FLOOD WARNING.

LAT...LON 3743 9119 3796 9090 3796 9064 3765 9065
      3764 9063 3743 9063

$$

KD

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 8:01 PM CDTRiver Flood WarningLSXSaint Charles53 hr
Aug 14, 8:10 PM CDTRiver Flood WarningLSXReynolds4 days
Aug 14, 9:37 PM CDTRiver Flood WarningLSXCrawford3 days
Aug 14, 9:37 PM CDTRiver Flood WarningLSXCrawford, Washington4 days
Aug 14, 9:37 PM CDTRiver Flood WarningLSXFranklin, Jefferson6 days
Aug 14, 9:37 PM CDTRiver Flood WarningLSXJefferson, Saint Louis6 days
Aug 14, 9:37 PM CDTRiver Flood WarningLSXJefferson, Saint Louis6 days
Aug 14, 9:37 PM CDTRiver Flood WarningLSXJefferson, Saint Louis6 days
Aug 14, 9:41 PM CDTRiver Flood WarningLSXJefferson4 days
Aug 14, 9:45 PM CDTRiver Flood WarningLSXFranklin5 days
Aug 15, 2:34 AM CDTFlash Flood WarningLSXSainte Genevieve, Saint Francois6 hr
Aug 15, 4:04 AM CDTFlash Flood WarningLSXSaint Louis, City of Saint Louis6 hr
Aug 15, 5:03 AM CDTFlash Flood WarningLSXJefferson, Sainte Genevieve, Saint Francois, Saint Louis, Washington6 hr
Aug 15, 8:34 AM CDTAreal Flood WarningLSXSainte Genevieve, Saint Francois6 hr
Aug 15, 9:25 AM CDTAreal Flood WarningLSXSainte Genevieve3 hr
Aug 15, 9:58 AM CDTAreal Flood WarningLSXSaint Louis, City of Saint Louis3 hr
Aug 15, 10:14 AM CDTAreal Flood WarningLSXMadison3 hr
Aug 15, 10:43 AM CDTAreal Flood WarningLSXIron, Reynolds, Washington3 hr
Aug 15, 11:01 AM CDTAreal Flood WarningLSXJefferson, Sainte Genevieve, Saint Francois, Saint Louis, Washington3 hr
Aug 15, 1:50 PM CDTAreal Flood WarningLSXJefferson, Sainte Genevieve, Saint Francois, Saint Louis, Washington3 hr
Aug 15, 2:29 PM CDTAreal Flood WarningLSXSainte Genevieve, Saint Francois3 hr

Nearby

Flash Flood Warnings in Missouri, 2016Every flash flood warning in 2016

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.