Alert archive / Missouri / Flash Flood Warnings in 2004

Flash Flood Warning 47, NWS Kansas City, MO

August 25, 2004Nodaway County, Missouri

NWS Kansas City, MO issued this flash flood warning at Aug 25, 2004, 12:34 PM CDT for Nodaway County, Missouri. It was in force for 8 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 25, 2004, 12:34 PM CDT (17:34 UTC)
Expired: Aug 25, 2004, 8:30 PM CDT
In force: 8 hr
Issued by: NWS Kansas City, MO
Area: Counties, with a storm outline in the text

County Nodaway County, MO

The radar

The Omaha radar (KOAX), 156 km from the middle of the area, began a volume at 17:37 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.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 5.6 hours before the alert went out and 156 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: 1754 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: -58 m²/s²
Significant tornado parameter: -0.4
Supercell composite: -3.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KEAX 251734
FFWEAX
MOC147-260130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1234 PM CDT WED AUG 25 2004

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NODAWAY COUNTY IN NORTHWEST MISSOURI

* UNTIL 830 PM CDT

* AT 1230 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL HAD MOVED 
  ACROSS THE WARNED AREA.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO   
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...     
  MARYVILLE...ARKOE...BARNARD...BURLINGTON JCT...CLEARMONT...        
  CLYDE...  CONCEPTION...ELMO...GRAHAM...GUILFORD...HOPKINS AND      
  PICKERING

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 4058 9465 4039 9462 4014 9463 4014 9505
      4018 9508 4026 9508 4028 9518 4047 9518
      4049 9522 4058 9522 4058 9522

$$

SRP

1 follow-up statement

000 
WGUS73 KEAX 260029
FFSEAX
MOC147-260039-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
729 PM CDT WED AUG 25 2004

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NODAWAY COUNTY HAS
BEEN CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED...ENDING THE FLOOD 
THREAT. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR 
LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 4058 9465 4039 9462 4014 9463 4014 9505
      4018 9508 4026 9508 4028 9518 4047 9518
      4049 9522 4058 9522 4058 9522

$$

KOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 25, 1:30 AM CDT	Flash Flood Warning	EAX	Gentry, Harrison	6 hr
Aug 25, 11:01 AM CDT	Severe Thunderstorm Warning	EAX	Atchison, Holt	59 min
Aug 25, 11:39 AM CDT	Severe Thunderstorm Warning	EAX	Nodaway	66 min
Aug 25, 12:17 PM CDT	Severe Thunderstorm Warning	EAX	Gentry	58 min
Aug 25, 12:41 PM CDT	Severe Thunderstorm Warning	EAX	Harrison, Worth	49 min
Aug 25, 1:15 PM CDT	Severe Thunderstorm Warning	EAX	Mercer	45 min

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