Alert archive / Missouri / Flash Flood Warnings in 2004

Flash Flood Warning 55, NWS Kansas City, MO

August 27, 2004Platte County, Missouri

NWS Kansas City, MO issued this flash flood warning at Aug 27, 2004, 8:59 PM CDT for Platte 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 27, 2004, 8:59 PM CDT (01:59 UTC)
Expired: Aug 28, 2004, 3:00 AM CDT
In force: 6 hr
Issued by: NWS Kansas City, MO
Area: Counties, with a storm outline in the text

County Platte County, MO

The radar

The Pleasant Hill radar (KEAX), 77 km from the middle of the area, began a volume at 02:00 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
Aug 27, 10:00 PM CDT	FLASH FLOOD	Platte Woods, MO	WATER OVER THE ROADWAY AT GREEN HILLS AND 9 HIGHWAY AND AT MELODY AND CROSSROADS.

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

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 2.0 hours before the alert went out and 83 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: 3473 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1317 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 28.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KEAX 280159
FFWEAX
MOC165-280800-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
859 PM CDT FRI AUG 27 2004

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

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

* UNTIL 300 AM CDT

* AT 854 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS CONTINUING TO DEVELOP AND TRACK ACROSS AREAS
  GENERALLY SOUTH OF STATE ROUTE 92.  HOURLY RAINFALL RATES OF
  UP TO 2 INCHES PER HOUR ARE EXPECTED IN THE PARKVILLE...PLATTE
  WOODS AND TIFFANY SPRINGS AREA.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...BEAN
  LAKE...DEARBORN...EDGERTON...FARLEY...KCI AIRPORT...PLATTE CITY...
  RIDGELY...WESTON...CAMDEN POINT...FERRELVIEW...AND HOUSTON LAKE.
  BRUSH CREEK...PRAIRIE CREEK AND THE SAND BRANCH OF THE PLATTE
  RIVER LIKELY WILL EXPERIENCE FLOODING IN SPOTS.

BE AWARE THAT LOW WATER CROSSINGS MAY BE IN YOUR AREA...WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

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 3953 9462 3918 9462 3920 9476 3924 9481
      3933 9489 3936 9489 3938 9488 3952 9507

$$

SF

3 follow-up statements

000 
WGUS73 KEAX 280250
FFSEAX
KSC103-MOC165-280745-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
946 PM CDT FRI AUG 27 2004

...FLASH FLOOD WARNING CONTINUES UNTIL 245 AM CDT FOR LEAVENWORTH 
COUNTY...

...FLASH FLOOD WARNING CONTINUES UNTIL 3 AM CDT FOR PLATTE COUNTY...

THUNDERSTORMS WITH TORRENTIAL RAINFALL CONTINUE TO MOVE NORTHEAST 
ACROSS THE NORTHWEST TWO THIRDS OF THE METRO AREA.  NEARLY 1.5 
INCHES OF RAIN HAS FALLEN AT THE INTERNATIONAL AIRPORT SINCE 7 
PM...AND DOPPLER RADAR ESTIMATES INDICATE THAT ANYWHERE FROM 2 TO 3 
INCHES HAVE FALLEN IN SOUTHERN LEAVENWORTH AND SOUTHERN PLATTE 
COUNTIES.

FLASH FLOODING WAS REPORTED IN TONGANOXIE...WHERE THE INTERSECTION 
OF 6TH AND CHURCH STREET WAS REPORTED CLOSED.  

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.  REMEMBER...TURN AROUND...DONT 
DROWN.

LAT...LON 3951 9470 3920 9462 3918 9488 3911 9517
      3937 9511 3940 9493

$$

HUDSON

000 
WGUS73 KEAX 280355
FFSEAX
KSC103-MOC165-280745-

NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1054 PM CDT FRI AUG 27 2004

...FLASH FLOOD WARNING CONTINUES UNTIL 245 AM CDT FOR LEAVENWORTH 
COUNTY...
...FLASH FOOD WARNING CONTINUES UNTIL 3 AM CDT FOR PLATTE COUNTY...

THUNDERSTORMS WITH HEAVY RAINFALL CONTINUE TO MOVE ACROSS 
LEAVENWORTH AND PLATTE COUNTY.  BETWEEN 9 AND 10:30 PM...OVER AN 
INCH OF RAIN FELL ACROSS LEAVENWORTH COUNTY.  IN THE SAME TIMEFRAME 
IN PLATTE COUNTY...ANOTHER QUARTER TO HALF AN INCH OF RAIN FELL.  

ADDITIONAL RAINFALL AMOUNTS BEFORE MIDNIGHT WILL BE FROM A QUARTER 
TO A HALF AN INCH OF RAIN.  

THE PLATTE COUNTY SHERIFF OFFICE REPORTED THAT SEVERAL ROADS WERE 
CLOSED DUE TO WATER...INCLUDING NEAR GREEN HILLS AND 9 HIGHWAY...AND 
NEAR MELODY AND CROSSROADS.

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 3952 9465 3918 9463 3922 9491 3911 9517
      3938 9512 3940 9493 3951 9501

$$

LVQ

000 
WGUS73 KEAX 280508
FFSEAX
KSC103-MOC165-280800-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1209 AM CDT SAT AUG 28 2004

...FLASH FLOOD WARNING CONTINUES UNTIL 300 AM CDT FOR PLATTE 
COUNTY...

...FLASH FLOOD WARNING CONTINUES UNTIL 245 AM CDT FOR LEAVENWORTH 
COUNTY...

BETWEEN 11 PM AND MIDNIGHT...MUCH OF THE RAINFALL ACROSS LEAVENWORTH 
AND PLATTE COUNTIES HAD DIMINISHED.  RAINFALL AMOUNTS AVERAGED 
AROUND A TENTH OF AN INCH.  THUNDERSTORMS WILL CONTINUE TO BE SPOTTY 
ACROSS LEAVENWORTH AND PLATTE COUNTY THROUGH AT LEAST 2 AM...WITH  
ADDITIONAL RAINFALL AMOUNTS LESS THAN A HALF AN INCH.  HOWEVER... 
ANOTHER SUBSTANTIAL BATCH OF THUNDERSTORMS IS COMING OUT OF 
SOUTHEAST KANSAS.  IF THESE STORMS HOLD TOGETHER...HEAVY RAINFALL 
WILL BE POSSIBLE AGAIN AFTER 2 AM.

LEAVENWORTH EMERGENCY MANAGEMENT REPORTED THAT TONGANOXIE AND 
STRANGER CREEKS WERE OUT OF THEIR BANKS FROM TONGANOXIE 
DOWNSTREAM...AND NUMEROUS ROADS WERE COVERED WITH WATER.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

LAT...LON 3950 9463 3920 9463 3921 9491 3902 9491
      3900 9514 3939 9517

$$

LVQ

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 7:12 PM CDT	Severe Thunderstorm Warning	EAX	Jackson	78 min
Aug 27, 7:28 PM CDT	Severe Thunderstorm Warning	EAX	Clay, Ray	92 min
Aug 27, 7:33 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan	57 min
Aug 27, 7:38 PM CDT	Severe Thunderstorm Warning	EAX	Caldwell	67 min
Aug 27, 7:39 PM CDT	Flash Flood Warning Emergency	EAX	Clay, Jackson	6 hr
Aug 27, 8:09 PM CDT	Flash Flood Warning	EAX	Caldwell, Daviess, Livingston	6 hr
Aug 27, 8:38 PM CDT	Severe Thunderstorm Warning	EAX	Carroll	67 min
Aug 27, 9:20 PM CDT	Flash Flood Warning	EAX	Linn, Macon	6 hr
Aug 27, 10:16 PM CDT	Flash Flood Warning	EAX	Ray	6 hr
Aug 27, 11:15 PM CDT	Flash Flood Warning	EAX	Putnam, Sullivan	6 hr
Aug 27, 11:29 PM CDT	Flash Flood Warning	EAX	Grundy	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.