Alert archive / Missouri / Flash Flood Warnings in 2007

Flash Flood Warning 9, NWS St. Louis, MO

May 6, 2007Boone County, Moniteau County, Missouri

NWS St. Louis, MO issued this flash flood warning at May 6, 2007, 4:16 PM CDT for Boone County, Moniteau County, Missouri. It was in force for 4 hr. 4 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 6, 2007, 4:16 PM CDT (21:16 UTC)
Expired: May 6, 2007, 8:15 PM CDT
In force: 4 hr
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Boone County, MO, Moniteau County, MO

The radar

The St Louis radar (KLSX), 153 km from the middle of the area, began a volume at 21:17 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

Time	Report	Where	Remark
May 6, 4:45 PM CDT	FLOOD	Centralia, MO	12 TO 18 INCHES OF WATER COVERING PORTIONS OF SCHUNEMEYER RD
May 6, 4:45 PM CDT	HEAVY RAIN 0	Columbia, MO	STANDING WATER ALONG THE EDGES OF HIGHWAY 163 IN THE SOUTH PART OF COLUMIBA
May 6, 5:30 PM CDT	FLOOD	Columbia, MO	AKEMAN BRIDGE AND DRISKEL OFF OF ROUTE E NEAR TWIN BRIDGES HAD SEVERAL FEET OF WATER OVER THE ROAD. BROWN SCHOOL ROAD WEST OF HIGHWAY 763 HAD 12-14 INCHES OF WATER COVERING THE ROADWAY. SEVERAL ROADS CLOSED DUE TO WATER UP TO 2 FEET DEEP IN A SUBDIVISON OFF OF
May 6, 5:45 PM CDT	FLOOD	Sandy Hook, MO	HIGHWAY 179 FLOODED WITH 1 TO 2 FEET OF WATER.

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, 9.3 hours before the alert went out and 244 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1328 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 1003 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 149 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 062119
FFWLSX
MOC019-135-070115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
416 PM CDT SUN MAY 6 2007

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BOONE COUNTY IN CENTRAL MISSOURI
  MONITEAU COUNTY IN CENTRAL MISSOURI

* UNTIL 815 PM CDT

* AT 412 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL EXTENDING FROM HALLSVILLE
  TO COLUMBIA TO CALIFORNIA.  RADAR ESTIMATES INDICATE 1 TO 3 INCHES
  OF RAIN HAS FALLEN WHICH HAS RESULTED IN UP TO 6 INCHES OF
  STANDING WATER ON SOME ROADWAYS.
  
* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE
  AFFECTING MURRY...MIDWAY...JAMESTOWN...HALLSVILLE...EASLEY...
  COLUMBIA...CENTRALIA AND ASHLAND.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

LAT...LON 3856 9277 3842 9253 3873 9239 3870 9221
      3923 9212 3923 9245 3880 9256 3868 9264

$$

GLASS

1 follow-up statement

000 
WGUS73 KLSX 062254
FFSLSX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
550 PM CDT SUN MAY 6 2007

MOC019-135-070115-
MONITEAU MO-BOONE MO-
550 PM CDT SUN MAY 6 2007

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR BOONE
AND MONITEAU COUNTIES...

AT 545 PM CDT...EMERGENCY MANAGEMENT OFFICIALS IN BOONE COUNTY 
REPORTED LOCALLIZED FLOODING ON THE NORTH SIDE OF COLUMBIA. SEVERAL 
ROADS INCLUDING BROWN SCHOOL ROAD HAD 1 TO 2 FEET OF WATER OVER THEM.

THE MONITEAU COUNTY SHERIFF ALSO REPORTED MINOR FLOODING ON HIGHWAY 
179 IN SANDY HOOK.

THERE MAY BE OTHER LOCATIONS EXPERIENCING MINOR FLOODING WHICH HAVE 
NOT BEEN REPORTED TO THE NATIONAL WEATHER SERVICE.

RAINFALL HAS ENDED AT THIS TIME ACROSS CENTRAL MISSOURI THEREFORE 
FLOOD WATERS SHOULD GRADUALLY RECEDE DURING THE EVENING HOURS.  
UNTIL THE FLOOD WATERS RECEDE...USE CAUTION AROUND SMALL CREEKS AND 
STREAMS...AND OTHER URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES 
WHICH TYPICALLY EXPERIENCE POOR DRAINAGE.

LAT...LON 3856 9277 3842 9253 3873 9239 3870 9221
      3923 9212 3923 9245 3880 9256 3868 9264

$$

GLASS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 2:06 PM CDT	Severe Thunderstorm Warning	LSX	Boone	39 min
May 6, 2:27 PM CDT	Severe Thunderstorm Warning	LSX	Moniteau	48 min
May 6, 2:43 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Monroe	62 min
May 6, 3:14 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Moniteau	61 min
May 6, 3:44 PM CDT	Severe Thunderstorm Warning	LSX	Moniteau	46 min
May 6, 3:51 PM CDT	Severe Thunderstorm Warning	LSX	Monroe	39 min
May 6, 4:35 PM CDT	Severe Thunderstorm Warning	LSX	Boone	40 min

Nearby

Flash Flood Warnings in Missouri, 2007 Every flash flood warning in 2007

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.