Alert archive / Missouri / Flash Flood Warnings in 2002

Flash Flood Warning 5, NWS St. Louis, MO

May 8, 2002Monroe County, Shelby County, Missouri

NWS St. Louis, MO issued this flash flood warning at May 8, 2002, 8:32 PM CDT for Monroe County, Shelby County, Missouri. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 8, 2002, 8:32 PM CDT (01:32 UTC)
Expired: May 9, 2002, 1:30 AM CDT
In force: 5 hr
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Monroe County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 157 km from the middle of the area, began a volume at 01:33 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 00:00Z, 1.5 hours before the alert went out and 255 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: 1642 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 951 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 090132
FFWSTL
MOC137-205-090630-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
827 PM CDT WED MAY 8 2002

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MONROE COUNTY IN NORTHEAST MISSOURI
  SHELBY COUNTY IN NORTHEAST MISSOURI

* UNTIL 130 AM CDT

* AT 827 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED            
  THUNDERSTORMS PRODUCING VERY HEAVY RAIN IN AND AROUND              
  SHELBINA...SHELBYVILLE...AND STOUTSVILLE.  IN ADDITION...MORE      
  THUNDERSTORMS WHICH WILL PRODUCE TORRENTIAL RAIN WILL MOVE INTO    
  MONROE AND SHELBY COUNTIES OVER THE NEXT SEVERAL HOURS.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE       
  AFFECTING MOST IF NOT ALL OF SHELBY AND MONROE                     
  COUNTIES...INCLUDING THE CITIES OF                                 
  SHELBYVILLE...BETHEL...CLARENCE...MADISON...PARIS...STOUTSVILLE
  ...AND  FLORIDA.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. ACT QUICKLY IF FLASH FLOODING IS OBSERVED. MOVE
TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT
TO FLOODING WHEN WATER BEGINS RISING.

CARNEY

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 8, 8:50 PM CDT	Severe Thunderstorm Warning	LSX		40 min
May 8, 9:33 PM CDT	Severe Thunderstorm Warning	LSX		27 min
May 8, 9:59 PM CDT	Tornado Warning	LSX	Pike, Ralls	46 min
May 8, 10:02 PM CDT	Flash Flood Warning	LSX	Cole, Moniteau	4 hr
May 8, 11:24 PM CDT	Flash Flood Warning	LSX	Boone, Callaway, Gasconade, Montgomery, Osage	6 hr
May 9, 2:04 AM CDT	Severe Thunderstorm Warning	LSX		41 min
May 9, 2:22 AM CDT	Severe Thunderstorm Warning	LSX		23 min

Nearby

Flash Flood Warnings in Missouri, 2002 Every flash flood warning in 2002

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.