Alert archive / Missouri / Flash Flood Warnings in 1998

Flash Flood Warning 47, NWS St. Louis, MO

October 5, 1998Lewis County, Monroe County, Shelby County, Missouri

NWS St. Louis, MO issued this flash flood warning at Oct 5, 1998, 10:18 AM CDT for Lewis County, Monroe County, Shelby County, 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
Oct 5, 1998, 10:18 AM CDT (15:18 UTC)
Expired
Oct 5, 1998, 2:20 PM CDT
In force
4 hr
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Lewis County, MO, Monroe County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 163 km from the middle of the area, began a volume at 15:19 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, 3.3 hours before the alert went out and 236 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 1998-10-05Temperature 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 1998-10-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 square meters per square second.19395878Sfc1 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
818 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
293 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 
TTAA00 KSTL 051520
FFWSTL
MOC007-019-027-051-111-137-205-051910-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1018 AM CDT MON OCT 5 1998

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
  COLE COUNTY IN CENTRAL MISSOURI
  LEWIS COUNTY IN NORTHEASTERN MISSOURI
  MONROE COUNTY MISSOURI IN NORTHEASTERN MISSOURI
  SHELBY COUNTY IN NORTHEASTERN MISSOURI

* UNTIL 220 PM CDT

* THE PERSISTENT HEAVY RAINS THAT HAVE OCCURRED THIS MORNING IS
  PRODUCING FLOODING PROBLEMS OVER PARTS OF CENTRAL AND NORTHEAST
  MISSOURI.  BOONE COUNTY NOW REPORTS WATER COVERING NUMEROUS ROADS
  BOTH IN COLUMBIA AND IN RURAL AREAS OF THE COUNTY.

* THE FLASH FLOOD THREAT WILL BE ESPECIALLY HIGH ALONG AND WEST OF A
  MONROE CITY...MEXICO...FULTON LINE...DUE TO THE RAINS THAT HAVE
  ALREADY OCCURRED THIS MORNING...AND THE RAINS THAT WILL PERSIST
  FOR SEVERAL MORE HOURS.

  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER ATTEMPT TO
  CROSS BRIDGES...DIPS...OR LOW-WATER CROSSINGS IF WATER COVERS THE
  ROAD. DO NOT DRIVE AROUND BARRICADES. IF YOUR VEHICLE STALLS
  ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. RAPIDLY RISING
  WATER MAY SWEEP THE VEHICLE AND ITS OCCUPANTS AWAY.

  TRUETT/RP

&

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 5, 8:50 AM CDTFlash Flood WarningLSXMoniteau4 hr
Oct 5, 9:11 AM CDTFlash Flood WarningLSXKnox4 hr
Oct 5, 10:18 AM CDTFlash Flood WarningLSXBoone, Callaway, Cole4 hr
Oct 5, 10:18 AM CDTFlash Flood WarningLSXAudrain4 hr
Oct 5, 12:43 PM CDTFlash Flood WarningLSXMoniteau3 hr
Oct 5, 2:50 PM CDTFlash Flood WarningLSXBoone, Callaway3 hr
Oct 5, 3:52 PM CDTFlash Flood WarningLSXMoniteau4 hr
Oct 5, 5:40 PM CDTFlash Flood WarningLSXBoone, Callaway10 hr

Nearby

Flash Flood Warnings in Missouri, 1998Every flash flood warning in 1998

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.