Alert archive / Missouri / Tornado Warnings in 2000
Tornado Warning 20, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at May 18, 2000, 8:13 PM CDT for Madison County, Missouri. It was in force for 17 min. 1 report 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
- May 18, 2000, 8:13 PM CDT (01:13 UTC)
- Expired
- May 18, 2000, 8:30 PM CDT
- In force
- 17 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Madison County, MO
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 18, 8:25 PM CDT | Thunderstorm Wind 55 E | Marquand, MO | Thunderstorm wind gusts downed trees in the Marquand area. |
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 |
|---|---|---|---|
| May 18, 3:00 PM CDT | Tornado Watch | SPC | 6 hr |
| May 18, 6:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 1.2 hours before the alert went out and 290 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
- 1359 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 1134 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
269 WFUS53 KLSX 190114 TORSTL MOC123-190130- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 813 PM CDT THU MAY 18 2000 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN MADISON COUNTY IN SOUTHEAST MISSOURI * UNTIL 830 PM CDT * AT 813 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 3 MILES WEST OF MARQUAND...MOVING EAST AT 30 MPH. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 3749 9031 3732 9028 3732 9015 3752 9015
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 7:08 PM CDT | Severe Thunderstorm Warning | LSX | Iron | 37 min |
| May 18, 7:34 PM CDT | Tornado Warning | LSX | Iron, Madison | 41 min |
Nearby
Tornado Warnings in Missouri, 2000Every tornado warning in 2000Tornadoes 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.