Alert archive / Missouri / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 4, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Feb 9, 2001, 7:37 AM CST for Saint Louis County, City of Saint Louis, Missouri. It was in force for 38 min. 2 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Feb 9, 2001, 7:37 AM CST (13:37 UTC)
- Expired
- Feb 9, 2001, 8:15 AM CST
- In force
- 38 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 9, 7:45 AM CST | Thunderstorm Wind 55 E | O Fallon, MO | |
| Feb 9, 7:45 AM CST | Thunderstorm Wind 55 E | O Fallon, MO |
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 12:00Z, 1.6 hours before the alert went out and 216 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 681 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 455 m²/s²
- 0-3 km storm-relative helicity
- 527 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
267
WUUS53 KLSX 091337
SVRSTL
ILC013-061-083-MOC113-183-189-510-091415-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
737 AM CST FRI FEB 9 2001
THE NATIONAL WEATHER SERVICE HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
LINCOLN COUNTY IN EAST CENTRAL MISSOURI
EASTERN ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI
ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI
ST. LOUIS CITY IN EAST CENTRAL MISSOURI
CALHOUN COUNTY IN WEST CENTRAL ILLINOIS
GREENE COUNTY IN WEST CENTRAL ILLINOIS
JERSEY COUNTY IN WEST CENTRAL ILLINOIS
* UNTIL 815 AM CST
* AT 737 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS FROM DAVIS TO 25 MILES SOUTHWEST OF
EUREKA...MOVING NORTHEAST AT 60 MPH.
* LOCATIONS IN THE PATH...
DARDENNE PRAIRIE
ELSBERRY
OFALLON
WINFIELD
EUREKA
HARDIN
COTTLEVILLE
ST. PETERS
CHESTERFIELD
CLARKSON VALLEY
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.
LAT...LON 3903 9117 3888 9083 3873 9076 3844 9076
3859 9024 3912 9013 3922 9012 3970 9018The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 9, 7:13 AM CST | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Warren | 32 min |
| Feb 9, 7:13 AM CST | Severe Thunderstorm Warning | LSX | Crawford | 32 min |
| Feb 9, 7:37 AM CST | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles | 38 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 2001Every severe thunderstorm warning in 2001
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.