Alert archive / Missouri / Flash Flood Warnings in 2004

Flash Flood Warning 50, NWS Kansas City, MO

August 27, 2004Grundy County, Missouri

NWS Kansas City, MO issued this flash flood warning at Aug 27, 2004, 5:34 PM CDT for Grundy County, Missouri. It was in force for 6 hr. 4 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 27, 2004, 5:34 PM CDT (22:34 UTC)
Expired
Aug 27, 2004, 11:30 PM CDT
In force
6 hr
Issued by
NWS Kansas City, MO
Area
Counties, with a storm outline in the text

County Grundy County, MO

The radar

The Pleasant Hill radar (KEAX), 161 km from the middle of the area, began a volume at 22:36 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 27, 6:07 PM CDTFLASH FLOOD2 Nnw Galt, MOWATER COVERING ROAD AT 100TH STREET AND STATE ROUTE J
Aug 27, 6:07 PM CDTFLASH FLOOD2 Nnw Galt, MOWATER COVERING ROAD NEAR 100TH STREET AND STATE ROUTE J
Aug 27, 8:17 PM CDTFLASH FLOOD4 E Jamesport, MOWATER IS APPROX 16-24 INCHES DEEP ACROSS COUNTY ROAD F 1 MILE WEST OF U HIGHWAY.
Aug 27, 11:37 PM CDTFLASH FLOODTrenton, MOMUDDY CREEK OUT OF ITS BANKS NEAR TRENTON MUNICIPAL AIRPORT AND THOMPSON CREEK OUT ITS BANKS NEAR CROWDER STATE PARK.

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 12:00Z, 10.6 hours before the alert went out and 221 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, Topeka, KS at 12:00Z on 2004-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2123 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, Topeka, KS at 12:00Z on 2004-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 273 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
2123 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
790 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
273 m²/s²
0-3 km storm-relative helicity
272 m²/s²
Significant tornado parameter
0.0
Supercell composite
12.6

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KEAX 272235
FFWEAX
MOC079-280430-

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

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GRUNDY COUNTY IN NORTH CENTRAL MISSOURI

* UNTIL 1130 PM CDT

* AT 528 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL IN THE TRENTON...SPICKARD
  AND GALT AREAS. RAINFALL RATES OF 1.5 TO 2.5 INCHES PER HOUR
  ARE OCCURING WITH THESE STORMS.

* THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL AND
  RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  TRENTON...BRIMSON...DUNLAP...EDINBURG...GALT...LAREDO...SPICKARD
  AND TINDALL.  THE THOMPSON RIVER AND ITS TRIBUTARIES...INCLUDING
  HICKORY AND MUDDY CREEK...AS WELL AS HONEY AND MEDICINE CREEKS
  WILL BE IMPACTED BY THIS EXCESSIVE RAINFALL.

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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
PLEASANT HILL.

LAT...LON 4027 9339 3998 9338 3996 9376 4025 9377

$$

SF
1 follow-up statement
000 
WGUS73 KEAX 272336
FFSEAX
MOC079-280430-

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

...FLASH FLOOD WARNING CONTINUES UNTIL 1130 PM CDT FOR GRUNDY
COUNTY...

AT 607 PM CDT...HAM RADIO OPERATORS REPORTED THAT NUMEROUS
ROADS ACROSS EASTERN GRUNDY COUNTY...INCLUDING STATE ROUTE
J NEAR 100TH STREET...ARE COVERED WITH WATER. DOPPLER RADAR
ESTIMATED THAT 2 TO 3 INCHES OF RAIN HAS FALLEN ACROSS
GRUNDY COUNTY...IN THE TRENTON...DUNLAP AND GALT AREAS SINCE
5:30 PM.

THUNDERSTORMS CONTINUE TO TRAIN ACROSS THE SAME AREA AND 
ARE PRODUCING VERY HEAVY RAINFALL ACROSS GRUNDY COUNTY.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLOODING
TO OCCUR...ESPECIALLY ALONG SMALL STREAMS AND NEAR LOW WATER
CROSSINGS. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
TRENTON...TINDALL...SPICKARD...LAREDO...GALT...EDINBURG...DUNLAP AND
BRIMSON.

THE HEAVY RAINFALL IS CAUSING FLOODING ALONG TRIBUTARIES OF
THE THOMPSON RIVER...INCLUDING MUDDY AND HICKORY CREEKS...
AS WELL AS ALONG LITTLE MEDICINE AND NO CREEKS.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE MINOR FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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.

LAT...LON 4025 9338 4020 9339 4004 9339 3998 9338
      3998 9374 4024 9378

$$

SF

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 8:47 PM CDTSevere Thunderstorm WarningEAXAtchison43 min
Aug 26, 9:11 PM CDTSevere Thunderstorm WarningEAXNodaway64 min
Aug 26, 9:30 PM CDTSevere Thunderstorm WarningEAXAtchison60 min
Aug 26, 10:12 PM CDTSevere Thunderstorm WarningEAXNodaway63 min
Aug 26, 10:16 PM CDTTornado WarningEAXNodaway59 min
Aug 26, 10:55 PM CDTTornado WarningEAXHarrison50 min
Aug 26, 11:03 PM CDTTornado WarningEAXWorth57 min
Aug 26, 11:21 PM CDTTornado WarningEAXMercer54 min
Aug 26, 11:48 PM CDTTornado WarningEAXHarrison42 min
Aug 27, 1:36 AM CDTSevere Thunderstorm WarningEAXMercer54 min
Aug 27, 4:00 PM CDTSevere Thunderstorm WarningEAXMercer, Putnam75 min
Aug 27, 4:23 PM CDTSevere Thunderstorm WarningEAXPutnam, Schuyler82 min
Aug 27, 5:10 PM CDTFlash Flood WarningEAXMercer6 hr
Aug 27, 5:20 PM CDTFlash Flood WarningEAXPutnam, Sullivan6 hr
Aug 27, 5:57 PM CDTSevere Thunderstorm WarningEAXGrundy, Sullivan78 min
Aug 27, 6:09 PM CDTSevere Thunderstorm WarningEAXPlatte66 min

Nearby

Flash Flood Warnings in Missouri, 2004Every 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.