Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 35, NWS St. Louis, MO

April 6, 2000Saint Louis County, City of Saint Louis, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 6, 2000, 11:44 PM CDT for Saint Louis County, City of Saint Louis, Missouri. It was in force for 46 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 6, 2000, 11:44 PM CDT (04:44 UTC)
Expired: Apr 7, 2000, 12:30 AM CDT
In force: 46 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties City of Saint Louis, MO, Saint Louis County, MO

What was reported inside it

Time	Report	Where	Remark
Apr 6, 11:45 PM CDT	Hail 0.75	Crestwood, MO	Storm spotters reported 3/4 inch hail.
Apr 7, 12:00 AM CDT	Hail 1	Shrewsbury, MO	Storm spotters reported 1 inch hail.
Apr 7, 12:15 AM CDT	Hail 1	Kirkwood, MO	Storm spotters reported 1 inch hail.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 4.7 hours before the alert went out and 224 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: 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 070444
SVRSTL
MOC189-510-070530-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1144 PM CDT THU APR 6 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 1230 AM CDT

* AT 1145 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR KIRKWOOD... MOVING NORTHEAST AT 35 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  MAPLEWOOD
  WEBSTER GROVES
  BRENTWOOD
  ST LOUIS CITY



THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING HAIL. LARGE HAIL CAN
CAUSE EXTENSIVE PROPERTY DAMAGE AN SERIOUS INJURY TO PEOPLE CAUGHT
OUTDOORS. MOVE INSIDE A STURDY BUILDING IMMEDIATELY.



GKS/MB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 7, 12:31 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles	59 min
Apr 7, 1:28 AM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	47 min
Apr 7, 5:24 AM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Warren	46 min
Apr 7, 2:05 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	55 min
Apr 7, 2:34 PM CDT	Severe Thunderstorm Warning	LSX	Washington	56 min
Apr 7, 2:39 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson	51 min
Apr 7, 3:29 PM CDT	Severe Thunderstorm Warning	LSX	Saint Francois, Washington	46 min
Apr 7, 3:49 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	56 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2000 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.