Alert archive / Missouri / Flash Flood Warnings in 2016

Flash Flood Warning 32, NWS St. Louis, MO

August 4, 2016Callaway County, Missouri

NWS St. Louis, MO issued this flash flood warning at Aug 4, 2016, 12:06 AM CDT for Callaway County, Missouri. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 4, 2016, 12:06 AM CDT (05:06 UTC)
Expired
Aug 4, 2016, 9:00 AM CDT
In force
9 hr
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Flood severity
Moderate

County Callaway County, MO

The radar

The St Louis radar (KLSX), 103 km from the middle of the area, began a volume at 05:12 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.1 hours before the alert went out and 272 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 2016-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1321 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 00:00Z on 2016-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 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
1321 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
1720 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

789 
WGUS53 KLSX 040506
FFWLSX
MOC027-041400-
/O.NEW.KLSX.FF.W.0032.160804T0506Z-160804T1400Z/
/00000.2.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1206 AM CDT THU AUG 4 2016

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  A DAM BREAK IN...
  CENTRAL CALLAWAY COUNTY IN CENTRAL MISSOURI...

* UNTIL 900 AM CDT THURSDAY

* AT 1201 AM CDT...COUNTY DISPATCH REPORTED THAT THE FAILURE OF THE
  EARTHEN DAM IMPOUNDING GLOVERS SPRING LAKE IS STILL ONGOING.

FLOOD WATERS ARE MOVING DOWN DUNLAP CREEK BELOW GLOVERS SPRING LAKE
DAM AND ALONG CROWS FORK CREEK.  COUNTY ROUTE 101 IS NOW CLOSED
BETWEEEN ROUTES UU AND COUNTY ROAD 108. ADDITIONAL ROADS THREATENED
BY THIS FLOODING INCLUDE STATE HIGHWAY UU AND STATE HIGHWAY O ALONG
CROWS FORK CREEK. PEOPLE IN THE VICINITY OF THESE CREEKS SHOULD TAKE
IMMEDIATE ACTION BY MOVING TO HIGHER GROUND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WATER FROM THE DAM BREAK WILL CAUSE FLOODING OF SMALL CREEKS AND
STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING SPOTS...AS
WELL AS WASH OUT ROADS NEARBY.

&&

LAT...LON 3887 9186 3874 9182 3874 9186 3886 9193

$$

BYRD
1 follow-up statement
507 
WGUS73 KLSX 041356
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
856 AM CDT THU AUG 4 2016

MOC027-041403-
/O.EXP.KLSX.FF.W.0032.000000T0000Z-160804T1400Z/
/00000.0.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CALLAWAY MO-
856 AM CDT THU AUG 4 2016

...THE FLASH FLOOD WARNING FOR A DAM BREAK WILL EXPIRE AT 900 AM CDT
FOR CENTRAL CALLAWAY COUNTY...

THE WATER BEING RELEASED FROM THE GLOVERS SPRING LAKE DAM FAILURE IS
SLOWING DOWN...AND IS NO LONGER EXPECTED TO POSE A SIGNIFICANT
THREAT. PLEASE CONTINUE TO HEED ALL ROAD CLOSURES...INCLUDING COUNTY
ROAD 101 AS THE ROADWAY LEADING UP TO THE BRIDGE NEAR THE DAM HAS
BEEN WASHED OUT.

LAT...LON 3887 9186 3874 9182 3874 9186 3886 9193

$$

BYRD

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.