Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 38, NWS St. Louis, MO

April 7, 2000Saint Charles County, Saint Louis County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 7, 2000, 1:28 AM CDT for Saint Charles County, Saint Louis County, Missouri. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 7, 2000, 1:28 AM CDT (06:28 UTC)
Expired
Apr 7, 2000, 2:15 AM CDT
In force
47 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Saint Charles County, MO, Saint Louis County, MO

The radar

The St Louis radar (KLSX), 11 km from the middle of the area, began a volume at 06:28 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

Lincoln, IL (KILX), launched 00:00Z, 6.5 hours before the alert went out and 232 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, Lincoln, IL at 00:00Z on 2000-04-07Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2000-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2331 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
74 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 
WUUS53 KLSX 070628
SVRSTL
MOC183-189-070715-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
128 AM CDT FRI APR 7 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI
  ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 215 AM CDT

* AT 126 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED TWO
  SEVERE THUNDERSTORMS...ONE STORM WAS OVER ST CHARLES CITY AND THE
  OTHER STORM WAS NEAR WENTZVILLE...MOVING EAST AT 25 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  BERKELY
  BRIDGETON
  O FALLON
  ST PETERS
  ST CHARLES


THIS STORM HzAS A HISTORY OF DAMAGING HAIL. STAY INSIDE AND AWAY
FROM WINDOWS.


GKS/MB

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 6, 11:44 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis46 min
Apr 7, 12:31 AM CDTSevere Thunderstorm WarningLSXLincoln, Saint Charles59 min
Apr 7, 5:24 AM CDTSevere Thunderstorm WarningLSXSaint Charles, Warren46 min
Apr 7, 2:05 PM CDTSevere Thunderstorm WarningLSXCrawford55 min
Apr 7, 2:34 PM CDTSevere Thunderstorm WarningLSXWashington56 min
Apr 7, 2:39 PM CDTSevere Thunderstorm WarningLSXJefferson51 min
Apr 7, 3:29 PM CDTSevere Thunderstorm WarningLSXSaint Francois, Washington46 min
Apr 7, 3:49 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve56 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2000Every severe thunderstorm warning in 2000

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.