Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 111, NWS St. Louis, MO

May 7, 2000Franklin County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 7, 2000, 2:05 AM CDT for Franklin County, Missouri. It was in force for 55 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
May 7, 2000, 2:05 AM CDT (07:05 UTC)
Expired
May 7, 2000, 3:00 AM CDT
In force
55 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Franklin County, MO

The radar

The St Louis radar (KLSX), 47 km from the middle of the area, began a volume at 07:05 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, 7.1 hours before the alert went out and 288 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 2000-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 178 joules per kilogram.LCLLFCEL10008507005003002001001 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 2000-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 square meters per square second.1939Sfc1 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
178 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
1032 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
47 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.

479 
WUUS53 KLSX 070704
SVRSTL
MOC071-070800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
205 AM CDT SUN MAY 7 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FRANKLIN COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 300 AM CDT

* AT 200 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 15 MILES WEST OF UNION... MOVING EAST AT 20
  MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  LESLIE
  BEAUFORT
  UNION
  ST. CLAIR

COPIOUS RAINS ARE ALSO FALLING IN THE AREA. A FLASH FLOOD WARNING IS
IN EFFECT AS WELL. LOCAL RAINFALL AMOUNTS OF 5 TO 8 INCHES OF RAIN
HAVE FALLEN AND SEVERAL MORE INCHES ARE POSSIBLE. THIS IS AN
EXTREMELY DANGEROUS SITUATION

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.

BRITT/PEDIGO

The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 12:53 AM CDTFlash Flood WarningLSXFranklin, Gasconade5 hr
May 7, 2:23 AM CDTFlash Flood WarningLSXSaint Charles, Saint Louis5 hr
May 7, 4:22 AM CDTSevere Thunderstorm WarningLSXFranklin, Washington38 min
May 7, 4:49 AM CDTFlash Flood WarningLSXJefferson4 hr
May 7, 6:32 AM CDTFlash Flood WarningLSXFranklin, Saint Charles, Saint Louis2 hr

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.