Alert archive / Missouri / Flash Flood Warnings in 2002

Flash Flood Warning 1, NWS St. Louis, MO

May 6, 2002Adams County, Pike County, Illinois; 6 counties in Missouri

NWS St. Louis, MO issued this flash flood warning at May 6, 2002, 9:25 AM CDT for Adams County, Pike County, Illinois; 6 counties in Missouri. It was in force for 4 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 6, 2002, 9:25 AM CDT (14:25 UTC)
Expired
May 6, 2002, 1:15 PM CDT
In force
4 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Adams County, IL, Pike County, IL, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 134 km from the middle of the area, began a volume at 14:25 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, 2.4 hours before the alert went out and 229 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, Davenport, at 12:00Z on 2002-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Davenport, at 12:00Z on 2002-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 131 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1406 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
131 m²/s²
0-3 km storm-relative helicity
97 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 KLSX 061425
FFWSTL
ILC001-149-MOC111-127-137-163-173-205-061815-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
921 AM CDT MON MAY 6 2002

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LEWIS COUNTY IN NORTHEAST MISSOURI
  MARION COUNTY IN NORTHEAST MISSOURI
  MONROE COUNTY IN NORTHEAST MISSOURI
  PIKE COUNTY IN NORTHEAST MISSOURI
  RALLS COUNTY IN NORTHEAST MISSOURI
  SHELBY COUNTY IN NORTHEAST MISSOURI
  ADAMS COUNTY IN WEST CENTRAL ILLINOIS
  PIKE COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 115 PM CDT

* THUNDERSTORMS HAVE BEEN PRODUCING HEAVY RAIN OVER PARTS OF
  NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS SINCE THE EARLY 
  MORNING HOURS.  RAINFALL ESTIMATES FROM RADAR INDICATE THAT 3 TO 4 
  INCHES OF RAIN HAS FALLEN FROM PARIS MISSOURI TO NEAR BOWLING 
  GREEN MISSOURI AND PITTSFIELD ILLINOIS.   SEVERAL COUNTY ROADS HAVE
  BEEN CLOSED BY FLOOD WATERS IN LEWIS COUNTY...IN THE MONTICELLO AND
  LA BELLE AREAS.

* FLASH FLOODING CAN BE EXPECTED ACROSS THE AREA.  JUST A FEW OF THE
  CITIES THAT WILL BE THREATENED BY FLOODING INCLUDE 
  PARIS...HANNIBAL...BOWLING GREEN...AND PITTSFIELD.

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

THOSE CAMPING NEAR SMALL STREAMS SHOULD MOVE TO HIGHER GROUND AT
ONCE. WATER LEVELS MAY RISE RAPIDLY WITH LITTLE OR NO WARNING...EVEN
IF THE HEAVY RAINS ARE WELL UPSTREAM OF YOUR CAMPSITE.

TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 7:45 AM CDTSevere Thunderstorm WarningLSX45 min
May 6, 8:28 AM CDTSevere Thunderstorm WarningLSX32 min
May 6, 8:48 AM CDTSevere Thunderstorm WarningLSX42 min
May 6, 9:55 AM CDTSevere Thunderstorm WarningLSX35 min

Nearby

Flash Flood Warnings in Missouri, 2002Flash Flood Warnings in Illinois, 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.