Alert archive / Missouri / Flash Flood Warnings in 2002

Flash Flood Warning 2, NWS St. Louis, MO

May 7, 2002Audrain County, Boone County, Callaway County, Missouri

NWS St. Louis, MO issued this flash flood warning at May 7, 2002, 12:53 AM CDT for Audrain County, Boone County, Callaway 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 counties it named.

The facts

Issued
May 7, 2002, 12:53 AM CDT (05:53 UTC)
Expired
May 7, 2002, 6:45 AM CDT
In force
6 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Audrain County, MO, Boone County, MO, Callaway County, MO

The radar

The St Louis radar (KLSX), 121 km from the middle of the area, began a volume at 05:53 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

Springfield, MO (KSGF), launched 00:00Z, 5.9 hours before the alert went out and 282 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2002-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2395 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2002-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 154 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
2395 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1012 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
154 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
1.5
Supercell composite
5.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLSX 070553
FFWSTL
MOC007-019-027-071145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1248 AM CDT TUE MAY 7 2002

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  AUDRAIN COUNTY IN CENTRAL MISSOURI
  BOONE COUNTY IN CENTRAL MISSOURI
  CALLAWAY COUNTY IN CENTRAL MISSOURI

* UNTIL 645 AM CDT

* AT 1248 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS PRODUCING VERY HEAVY RAIN IN AND AROUND COLUMBIA AND 
ALONG AND NORTH OF INTERSTATE 70 TOWARD MEXICO MISSOURI.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA...AND WILL BE   
AFFECTING MUCH OF ALL THREE COUNTIES...INCLUDING THE CITY OF 
COLUMBIA.

NATIONAL WEATHER SERVICE DOPPLER RADAR PRECIPITATION ESTIMATES 
INDICATE 2 TO 3 INCHES OF RAIN HAVE ALLRADY FALLEN AND ANOTHER 2 
INCHES IS LIKELY TO FALL BETWEEN NOW AND 3 AM.

IF FLASH FLOODING IS OBSERVED OR IMMINENT...MOVE QUICKLY TO HIGHER 
GROUND. NEVER DRIVE INTO AN AREA WHERE WATER COVERS THE ROAD.

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.

PEDIGO

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 11:04 PM CDTSevere Thunderstorm WarningLSX41 min
May 6, 11:34 PM CDTSevere Thunderstorm WarningLSX41 min
May 6, 11:45 PM CDTSevere Thunderstorm WarningLSX45 min
May 7, 12:11 AM CDTSevere Thunderstorm WarningLSX64 min
May 7, 12:13 AM CDTTornado WarningLSXAudrain, Callaway62 min
May 7, 12:19 AM CDTSevere Thunderstorm WarningLSX41 min
May 7, 12:38 AM CDTSevere Thunderstorm WarningLSX22 min
May 7, 1:04 AM CDTSevere Thunderstorm WarningLSX41 min
May 7, 1:47 AM CDTSevere Thunderstorm WarningLSX28 min
May 7, 2:09 AM CDTFlash Flood WarningLSXLincoln, Montgomery5 hr
May 7, 2:09 AM CDTTornado WarningLSXLincoln51 min
May 7, 2:23 AM CDTTornado WarningLSXSaint Charles52 min
May 7, 3:10 AM CDTSevere Thunderstorm WarningLSX60 min
May 7, 3:11 AM CDTSevere Thunderstorm WarningLSX34 min
May 7, 3:18 AM CDTSevere Thunderstorm WarningLSX27 min
May 7, 3:27 AM CDTSevere Thunderstorm WarningLSX33 min
May 7, 3:38 AM CDTSevere Thunderstorm WarningLSX52 min
May 7, 3:46 AM CDTSevere Thunderstorm WarningLSX44 min
May 7, 3:49 AM CDTSevere Thunderstorm WarningLSX41 min
May 7, 3:58 AM CDTFlash Flood WarningLSXSaint Charles, Warren6 hr
May 7, 4:02 AM CDTSevere Thunderstorm WarningLSX43 min

Nearby

Flash Flood Warnings in Missouri, 2002Every 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.