Alert archive / Missouri / Flash Flood Warnings in 2003

Flash Flood Warning 13, NWS Kansas City, MO

July 17, 2003Macon County, Missouri

NWS Kansas City, MO issued this flash flood warning at Jul 17, 2003, 7:38 AM CDT for Macon County, Missouri. It was in force for 6 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: Jul 17, 2003, 7:38 AM CDT (12:38 UTC)
Expired: Jul 17, 2003, 1:45 PM CDT
In force: 6 hr
Issued by: NWS Kansas City, MO
Area: Counties, with a storm outline in the text

County Macon County, MO

The radar

The Pleasant Hill radar (KEAX), 197 km from the middle of the area, began a volume at 12:41 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 0.6 hours before the alert went out and 253 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: 2124 J/kg
Mixed-layer CIN: -621 J/kg
Mixed-layer LCL: 2548 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.8

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KEAX 171239
FFWEAX
MOC121-171845-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
738 AM CDT THU JUL 17 2003

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN MACON COUNTY IN NORTH CENTRAL MISSOURI

* UNTIL 145 PM CDT

* AT 736 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
  FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING
  INCLUDE...MACON...LONG BRANCH STATE PARK...LA PLATA...EXCELLO...
  AXTELL...ATLANTA AND ANABEL.

DOPPLER RADAR ESTIMATED RAINFALL IN EXCESS OF THREE INCHES HAS 
FALLEN ACROSS NORTHEASTERN MACON COUNTY. RUNOFF FROM THIS EXCESSIVE 
RAINFALL WILL LEAD TO RAPID RISES...AND THE THREAT OF FLASH FLOODING 
ON AREA STREAMS AND CREEKS.

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.

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

LAT...LON 4004 9236 4003 9266 3962 9257 3963 9233
          3991 9233

$$

SEAMAN

1 follow-up statement

000 
WGUS73 KEAX 171433
FFSEAX
MOC121-171830-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
931 AM CDT THU JUL 17 2003

...FLASH FLOOD WARNING CONTINUES UNTIL 145 PM CDT FOR EASTERN MACON
COUNTY...

AT 926 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
DOPPLER RADAR ESTIMATED THAT UP TO 4 INCHES OR MORE OF RAIN FELL 
EAST OF MACON THIS MORNING WITH EARLIER STORMS.  ADDITIONAL 
SCATTERED THUNDERSTORMS FROM AXTELL AND MACON...NORTH TO GREEN CITY 
AND MILAN...WILL ALSO MOVE OVER PORTIONS OF EASTERN MACON COUNTY 
THROUGHOUT THE MORNING.

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 4004 9236 4002 9271 3967 9249 3963 9232

$$

HUDSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 6:04 AM CDT	Flash Flood Warning	EAX	Livingston	6 hr
Jul 17, 6:57 AM CDT	Severe Thunderstorm Warning	EAX	Pettis	63 min
Jul 17, 7:42 AM CDT	Flash Flood Warning	EAX	Pettis, Saline	6 hr

Nearby

Flash Flood Warnings in Missouri, 2003 Every flash flood warning in 2003

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.