Alert archive / Missouri / Tornado Warnings in 2002
Tornado Warning 3, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 24, 2002, 3:35 PM CDT for Washington County, Missouri. It was in force for 25 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 24, 2002, 3:35 PM CDT (20:35 UTC)
- Expired
- Apr 24, 2002, 4:00 PM CDT
- In force
- 25 min
- Issued by
- NWS St. Louis, MO
- Area
- Counties, with a storm outline in the text
County Washington County, MO
The radar
The St Louis radar (KLSX), 83 km from the middle of the area, began a volume at 20:34 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 24, 3:55 PM CDT | Tornado F1 | Caledonia, MO | A tornado formed in southeast Washington County just south of Caledonia. The tornado formed in a wooded area them moved east to a home near Highway 21 and Buford Farm Road. An unoccupied mobile home was destroyed and several vehicles were severely damaged. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 24, 2:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 8.6 hours before the alert went out and 283 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
- 1336 J/kg
- Mixed-layer CIN
- -146 J/kg
- Mixed-layer LCL
- 872 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 464 m²/s²
- 0-3 km storm-relative helicity
- 421 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KLSX 242035 TORSTL MOC221-242100- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 333 PM CDT WED APR 24 2002 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... WASHINGTON COUNTY IN EAST CENTRAL MISSOURI * UNTIL 400 PM CDT * AT 333 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED TWO SEVERE THUNDERSTORMS WITH STRONG ROTATION. ONE WAS 7 MILES NORTHEAST OF COURTOIS IN SOUTHWEST WASHINGTON COUNTY. THE OTHER WAS 7 MILES WEST NORTHWEST OF POTOSI. THE THUNDERSTORMS WERE MOVING EAST AT 40 MPH...AND MAY PRODUCE A TORNADO AT ANY TIME * LOCATIONS IN THE PATH... BELGRADE CALEDONIA POTOSI IRONDALE IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW MOVE TO A BASEMENT...UNDERGROUND STORM SHELTER...OR AN INTERIOR ROOM OR HALLWAY ON THE LOWEST LEVEL OF A STURDY BUILDING. LAT...LON 3814 9102 3775 9111 3773 9065 3809 9065
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 11:48 AM CDT | Severe Thunderstorm Warning | LSX | 57 min | |
| Apr 24, 12:10 PM CDT | Severe Thunderstorm Warning | LSX | 35 min | |
| Apr 24, 12:16 PM CDT | Severe Thunderstorm Warning | LSX | 29 min | |
| Apr 24, 12:30 PM CDT | Severe Thunderstorm Warning | LSX | 45 min | |
| Apr 24, 12:46 PM CDT | Severe Thunderstorm Warning | LSX | 29 min | |
| Apr 24, 1:11 PM CDT | Severe Thunderstorm Warning | LSX | 49 min | |
| Apr 24, 1:20 PM CDT | Severe Thunderstorm Warning | LSX | 25 min | |
| Apr 24, 1:51 PM CDT | Severe Thunderstorm Warning | LSX | 54 min | |
| Apr 24, 2:01 PM CDT | Severe Thunderstorm Warning | LSX | 14 min | |
| Apr 24, 2:21 PM CDT | Severe Thunderstorm Warning | LSX | 54 min | |
| Apr 24, 2:50 PM CDT | Severe Thunderstorm Warning | LSX | 25 min | |
| Apr 24, 3:00 PM CDT | Severe Thunderstorm Warning | LSX | 60 min | |
| Apr 24, 3:13 PM CDT | Severe Thunderstorm Warning | LSX | 47 min | |
| Apr 24, 3:19 PM CDT | Severe Thunderstorm Warning | LSX | 16 min | |
| Apr 24, 3:27 PM CDT | Severe Thunderstorm Warning | LSX | 33 min | |
| Apr 24, 3:29 PM CDT | Severe Thunderstorm Warning | LSX | 61 min | |
| Apr 24, 3:57 PM CDT | Severe Thunderstorm Warning | LSX | 33 min | |
| Apr 24, 3:57 PM CDT | Severe Thunderstorm Warning | LSX | 48 min | |
| Apr 24, 4:14 PM CDT | Severe Thunderstorm Warning | LSX | 16 min | |
| Apr 24, 4:34 PM CDT | Severe Thunderstorm Warning | LSX | 41 min | |
| Apr 24, 4:46 PM CDT | Tornado Warning | LSX | Madison | 29 min |
| Apr 24, 4:56 PM CDT | Tornado Warning | LSX | Madison | 19 min |
| Apr 24, 5:00 PM CDT | Severe Thunderstorm Warning | LSX | 45 min |
Nearby
Tornado Warnings in Missouri, 2002Every tornado warning in 2002Tornadoes in 2002
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; radar from the NEXRAD Level II archive.