Alert archive / Missouri / Flash Flood Warnings in 2008

Flash Flood Warning 2, NWS Kansas City, MO

April 23, 2008Jackson County, Missouri

NWS Kansas City, MO issued this flash flood warning at Apr 23, 2008, 6:59 PM CDT for Jackson County, Missouri. It was in force for 5 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: Apr 23, 2008, 6:59 PM CDT (23:59 UTC)
Expired: Apr 24, 2008, 12:01 AM CDT
In force: 5 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

County Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 37 km from the middle of the area, began a volume at 00:02 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
Apr 23, 7:37 PM CDT	FLASH FLOOD	2 E Kansas City, MO	WATER RUNNING OVER THE ROAD AT THE INTERSECTION OF GARDNER AND CHOUTEAU PARKWAY

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, 12.0 hours before the alert went out and 110 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 939 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 68 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 KEAX 240002
FFWEAX
MOC095-240600-
/O.NEW.KEAX.FF.W.0002.080423T2359Z-080424T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
659 PM CDT WED APR 23 2008

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN JACKSON COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 100 AM CDT THURSDAY

* AT 653 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. RADAR RAINFALL HAS ESTIMATED IN EXCESS OF AN INCH OF  
  RAIN OVER THE PAST HOUR OVER KANSAS CITY MISSOURI. RAPIDLY RISING  
  WATER HAS BEEN REPORTED IN THE WESTPORT AREA. THIS FLOODING WILL   
  AFFECT MAINLY URBAN LOCATIONS WITH POOR DRAINAGE.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...BLUE
  SPRINGS...BUCKNER...COURTNEY...GRAIN VALLEY...INDEPENDENCE...KANSAS
  CITY...OAK GROVE...RAYTOWN...SUGAR CREEK...LAKE                    
  TAPAWINGO...LEVASY   AND SIBLEY.

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

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE.

LAT...LON 3914 9449 3911 9444 3915 9440 3919 9440
      3916 9437 3916 9435 3919 9433 3923 9428
      3919 9419 3915 9412 3899 9412 3897 9461
      3910 9459 3913 9453

$$

SAW

2 follow-up statements

000 
WGUS73 KEAX 240138
FFSEAX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
834 PM CDT WED APR 23 2008

MOC095-240600-
/O.CON.KEAX.FF.W.0002.000000T0000Z-080424T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON MO-
834 PM CDT WED APR 23 2008

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR MINOR FLOODING OF POOR
DRAINAGE AREAS IN NORTHERN JACKSON COUNTY UNTIL 100 AM CDT...

AT 830 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
RAIN WITH A FEW THUNDERSTORMS IN THE WARNED AREA. RADAR ESTIMATES 
THAT ONE HALF TO ONE AND A HALF INCHES OF RAIN HAS FALLEN SINCE 5 PM 
WITH ADDITIONAL RAINFALL AMOUNTS AROUND ONE HALF INCH POSSIBLE. LAW 
ENFORCEMENT HAS REPORTED THAT SOME ROADWAYS HAVE BEEN 
FLOODED...ESPECIALLY IN DOWNTOWN KANSAS CITY.  

MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO 
CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE 
ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON 
FOOT OR IN A VEHICLE.

LAT...LON 3914 9449 3911 9444 3915 9440 3919 9440
      3916 9437 3916 9435 3919 9433 3923 9428
      3919 9419 3915 9412 3899 9412 3897 9461
      3910 9459 3913 9453

$$

DB

000 
WGUS73 KEAX 240501
FFSEAX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1201 AM CDT THU APR 24 2008


MOC095-240516-
/O.CAN.KEAX.FF.W.0002.000000T0000Z-080424T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JACKSON MO-
1201 AM CDT THU APR 24 2008

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHERN JACKSON
COUNTY IS CANCELLED...

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

IF FLOOD WAS OBSERVED PLEASE RELAY YOUR REPORT TO LOCAL LAW
ENFORCEMENT OR TO THE NATIONAL WEATHER SERVICE IN PLEASANT HILL.

LAT...LON 3914 9449 3911 9444 3915 9440 3919 9440
      3916 9437 3916 9435 3919 9433 3923 9428
      3919 9419 3915 9412 3899 9412 3897 9461
      3910 9459 3913 9453

$$

CUTTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 4:09 AM CDT	Flood Watch	EAX	Adair, Bates, Buchanan, Caldwell, Carroll, Cass and 27 more	29 hr
Apr 23, 4:42 PM CDT	Areal Flood Advisory	EAX	Buchanan, Platte	6 hr
Apr 23, 5:33 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	27 min
Apr 23, 6:08 PM CDT	Areal Flood Advisory	EAX	Andrew, Bates, Cass, Clay, Clinton, DeKalb and 1 more	5 hr
Apr 23, 6:28 PM CDT	Severe Thunderstorm Warning	EAX	Lafayette, Ray	47 min
Apr 23, 6:38 PM CDT	Flash Flood Warning	EAX	Clay, Clinton, Platte	5 hr

Nearby

Flash Flood Warnings in Missouri, 2008 Every flash flood warning in 2008

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.