Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 39, NWS St. Louis, MO

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

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 7, 2000, 5:24 AM CDT for Saint Charles County, Warren County, Missouri. It was in force for 46 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, 5:24 AM CDT (10:24 UTC)
Expired: Apr 7, 2000, 6:10 AM CDT
In force: 46 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Saint Charles County, MO, Warren County, MO

The radar

The St Louis radar (KLSX), 22 km from the middle of the area, began a volume at 10:38 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, 10.4 hours before the alert went out and 251 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.

309 
WUUS53 KLSX 071024
SVRSTL
MOC183-219-071110-

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

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 610 AM CDT

* AT 520 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR NEW HAVEN... MOVING NORTHEAST AT 30 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  MARTHASVILLE
  HOLSTEIN
  TRELOAR
  NEW MELLE



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.



WDB

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 6, 11:44 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	46 min
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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.