Alert archive / Missouri / Flash Flood Warnings in 2004

Flash Flood Warning 9, NWS Kansas City, MO

May 19, 2004Cass County, Missouri

NWS Kansas City, MO issued this flash flood warning at May 19, 2004, 4:36 AM CDT for Cass 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: May 19, 2004, 4:36 AM CDT (09:36 UTC)
Expired: May 19, 2004, 10:30 AM CDT
In force: 6 hr
Issued by: NWS Kansas City, MO
Area: Counties, with a storm outline in the text

County Cass County, MO

The radar

The Pleasant Hill radar (KEAX), 18 km from the middle of the area, began a volume at 09:37 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 19, 4:43 AM CDT	FLASH FLOOD	Dayton, MO	CONTINUED FLASH FLOODING ACROSS MUCH OF CASS COUNTY. A FAMILY WAS REPORTED STRANDED NEAR DAYTON. AS OF 8 AM...22 HOMES WERE REPORTED EVAUACTED IN SOUTHERN FREEMAN...AND 11 MORE IN LAKE ANNETTE.

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, 9.6 hours before the alert went out and 199 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: 1439 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 1070 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 317 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KEAX 190943
FFWEAX
MOC037-191530-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
436 AM CDT WED MAY 19 2004

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CASS COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 1030 AM CDT

* AT 433 AM CDT...TRAINED WEATHER SPOTTERS REPORTED THAT EXCESSIVE   
RAINFALL NEAR 8 INCHES OVER THE PAST 7 HOURS WAS PRODUCING FLOODING 
ACROSS THE WARNED AREA.

* EXCESSIVE RAINFALL WAS CAUSING FLASH FLOODING TO OCCUR. SOME
  LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...HARRISONVILLE...
  BELTON...CREIGHTON...DAYTON...FREEMAN...GARDEN CITY...GUNN CITY...
  PECULIAR...PLEASANT HILL...RAYMORE...STRASBURG AND BALDWIN PARK.

ADDITIONAL RAINFALL RATES UPWARDS OF 2 INCHES PER HOUR WILL CONTINUE 
TO AFFECT THE WARNED AREA. STORMS WILL CONTINUE TO DEVELOP AND 
MOVE ACROSS THE SAME AREA THAT HAS ALREADY EXPERIENCED EXCESSIVE 
RAINFALL.

THIS EXTENDS THE PREVIOUS FLASH FLOOD WARNING FOR CASS COUNTY.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
REMEMBER...TURN AROUND...DONT DROWN.

LAT...LON 3882 9415 3857 9413 3856 9409 3846 9409
      3849 9461 3883 9459

$$

STOFLET

1 follow-up statement

000 
WGUS73 KEAX 191209
FFSEAX
MOC037-191530-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
708 AM CDT WED MAY 19 2004

...FLASH FLOOD WARNING CONTINUES UNTIL 1030 AM CDT FOR CASS COUNTY...

AT 700 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL ACROSS NORTHEAST CASS 
COUNTY. DOPPLER RADAR ESTIMATED RAINFALL RATES OF 1 TO 2 INCHES 
ASSOCIATED WITH STORMS THAT STRETCHED FROM HARRISONVILLE TO GUNN 
CITY. SEVERAL AREAS OF THE COUNTIES HAVE RECEIVED 3 TO 5 INCHES
OF RAIN SINCE THE RAINS BEGAN LAST EVENING. ISOLATED RAINFALL TOTALS
OF 7 INCHES HAVE BEEN REPORTED NEAR ARCHIE. 

HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA. RUNOFF FROM THIS
EXCESSIVE RAINFALL IS CAUSING FLOODING TO OCCUR...ESPECIALLY ALONG SMALL 
STREAMS AND NEAR LOW WATER CROSSINGS. SOME LOCATIONS THAT WILL 
EXPERIENCE FLOODING INCLUDE... HARRISONVILLE...STRASBURG...RAYMORE...
PLEASANT HILL...PECULIAR...GUNN CITY...GARDEN 
CITY...FREEMAN...DAYTON...CREIGHTON...CLEVELAND AND BELTON.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...AND NORMALLY DRY WASHES...AS WELL AS
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3848 9435 3848 9462 3884 9460 3883 9413
      3877 9415 3872 9414 3858 9412 3857 9409
      3846 9408 3846 9408 3844 9421

$$

SF

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 18, 9:22 PM CDT	Severe Thunderstorm Warning	EAX	Cass	53 min
May 18, 10:41 PM CDT	Flash Flood Warning	EAX	Cass	6 hr
May 18, 11:11 PM CDT	Severe Thunderstorm Warning	EAX	Pettis, Saline	94 min
May 19, 12:48 AM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass	72 min
May 19, 2:24 AM CDT	Severe Thunderstorm Warning	EAX	Bates	36 min
May 19, 2:32 AM CDT	Severe Thunderstorm Warning	EAX	Cass	58 min
May 19, 3:09 AM CDT	Flash Flood Warning	EAX	Bates, Henry	6 hr
May 19, 3:25 AM CDT	Flash Flood Warning	EAX	Clay, Jackson, Platte	6 hr
May 19, 6:45 AM CDT	Flash Flood Warning	EAX	Johnson	6 hr

Nearby

Flash Flood Warnings in Missouri, 2004 Every flash flood warning in 2004

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.