Alert archive / Missouri / Flash Flood Warnings in 2008

Flash Flood Warning 21, NWS Kansas City, MO

June 15, 2008Henry County, Missouri

NWS Kansas City, MO issued this flash flood warning at Jun 15, 2008, 2:37 PM CDT for Henry County, Missouri. It was in force for 12 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: Jun 15, 2008, 2:37 PM CDT (19:37 UTC)
Expired: Jun 16, 2008, 2:30 AM CDT
In force: 12 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

County Henry County, MO

The radar

The Pleasant Hill radar (KEAX), 69 km from the middle of the area, began a volume at 19:41 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
Jun 15, 3:00 PM CDT	FLASH FLOOD	3 Nw Tightwad, MO	FLOWING WATER UP TO ONE AND A HALF FEET WAS REPORTED ON HIGHWAY C NEAR TIGHTWAD. THE ROAD WAS TEMPORARILY CLOSED.

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 12:00Z, 7.6 hours before the alert went out and 160 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: 510 J/kg
Mixed-layer CIN: -312 J/kg
Mixed-layer LCL: 1578 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KEAX 151944
FFWEAX
MOC083-160730-
/O.NEW.KEAX.FF.W.0021.080615T1937Z-080616T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
237 PM CDT SUN JUN 15 2008

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

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

* UNTIL 230 AM CDT MONDAY

* AT 236 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
  WARNED AREA. RAINFALL AMOUNTS OF ONE TO TWO INCHES HAVE ALREADY
  FALLEN ACROSS MUCH OF HENRY COUNTY. ADDITIONAL RAINFALL OF ONE TO 
  TWO INCHES WILL BE POSSIBLE BEFORE THE STORMS MOVE OUR OF THE AREA.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CLINTON...SHAWNEE MOUND...WINDSOR...CALHOUN...DEEPWATER...MONTROSE
  AND URICH.

TRAINED STORM SPOTTERS HAVE REPORTED FLOWING WATER OVER HIGHWAY 13 
BETWEEN SHAWNEE MOUND AND CLINTON...IN ADDITION TO NUMEROUS LOW 
WATER CROSSINGS BEING IMPASSIBLE.

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 3822 9408 3856 9407 3856 9366 3855 9365
      3855 9351 3824 9351 3821 9353 3822 9357
      3820 9358 3820 9392

$$

MAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 15, 10:06 AM CDT	Severe Thunderstorm Warning	EAX	Andrew, Gentry, Nodaway	24 min
Jun 15, 11:50 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Clinton, Ray	25 min
Jun 15, 12:00 PM CDT	Severe Thunderstorm Warning	EAX	Putnam, Schuyler	45 min
Jun 15, 1:16 PM CDT	Severe Thunderstorm Warning	EAX	Henry	44 min
Jun 15, 1:45 PM CDT	Areal Flood Advisory	EAX	Bates, Cass, Johnson	6 hr
Jun 15, 2:10 PM CDT	Areal Flood Advisory	EAX	Bates, Henry	6 hr
Jun 15, 3:44 PM CDT	Areal Flood Advisory	EAX	Andrew, DeKalb, Gentry, Nodaway	6 hr
Jun 15, 5:24 PM CDT	River Flood Warning	EAX	Cass, Henry, Johnson	4 hr
Jun 15, 5:24 PM CDT	River Flood Warning	EAX	Bates, Cass, Henry	38 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.