Alert archive / Missouri / Tornado Warnings in 1998
Tornado Warning 11, NWS St. Louis, MO
NWS St. Louis, MO issued this tornado warning at Apr 13, 1998, 4:40 PM CDT for Saint Charles County, Missouri. It was in force for 65 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 13, 1998, 4:40 PM CDT (21:40 UTC)
- Expired
- Apr 13, 1998, 5:45 PM CDT
- In force
- 65 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Saint Charles County, MO
The radar
The St Louis radar (KLSX), 9 km from the middle of the area, began a volume at 21:44 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 13, 4:50 PM CDT | Thunderstorm Wind 52 | St Paul, MO | |
| Apr 13, 4:50 PM CDT | Thunderstorm Wind 52 | O Fallon, MO | |
| Apr 13, 5:05 PM CDT | Thunderstorm Wind 60 | St Charles Arpt, MO | Thunderstorm wind gusts destroyed a barn near the St. Charles Airport. |
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 13, 3:45 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 9.7 hours before the alert went out and 234 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
- 1703 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 337 m²/s²
- 0-3 km storm-relative helicity
- 313 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 132140 RRA TORSTL MOC183-132245- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 440 PM CDT MON APR 13 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 545 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL MISSOURI ...EASTERN ST. CHARLES COUNTY AT 440 PM...A POSSIBLE TORNADO LOCATED JUST NORTHEAST OF WENTZVILLE WAS MOVING EAST AT 30 MPH. ANOTHER POSSIBLE TORNADO WAS LOCATED JUST EAST OF FORISTELL ALSO MOVING EAST AT 30 MPH. TOWNS IN THE PATH OF THESE TORNADOS INCLUDE WENTZVILLE...OFALLON... ST PETERS...LAKE ST LOUIS AND ST CHARLES. SEEK SHELTER NOW IN A BASEMENT OR AN INTERIOR ROOM. Y(OUR LIFE AND THE LIVES OF THOSE AROUND YOU MAY DEPEND ON YOUR ACTIONS. DLF/FG
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 10:41 AM CDT | Severe Thunderstorm Warning | LSX | Franklin | 49 min |
| Apr 13, 12:04 PM CDT | Severe Thunderstorm Warning | LSX | Saint Francois | 56 min |
| Apr 13, 12:10 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 50 min |
| Apr 13, 1:42 PM CDT | Severe Thunderstorm Warning | LSX | Boone | 63 min |
| Apr 13, 1:56 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 49 min |
| Apr 13, 2:19 PM CDT | Severe Thunderstorm Warning | LSX | Callaway | 41 min |
| Apr 13, 2:48 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 42 min |
| Apr 13, 2:57 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Montgomery | 48 min |
| Apr 13, 3:05 PM CDT | Tornado Warning | LSX | Callaway, Montgomery | 40 min |
| Apr 13, 3:09 PM CDT | Tornado Warning | LSX | Crawford | 51 min |
| Apr 13, 3:19 PM CDT | Severe Thunderstorm Warning | LSX | Warren | 41 min |
| Apr 13, 3:24 PM CDT | Tornado Warning | LSX | Washington | 51 min |
| Apr 13, 3:48 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 42 min |
| Apr 13, 3:52 PM CDT | Tornado Warning | LSX | Warren | 53 min |
| Apr 13, 4:11 PM CDT | Tornado Warning | LSX | Jefferson, Washington | 49 min |
| Apr 13, 4:16 PM CDT | Tornado Warning | LSX | Saint Charles | 44 min |
| Apr 13, 4:21 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 54 min |
| Apr 13, 4:45 PM CDT | Tornado Warning | LSX | Sainte Genevieve, Saint Francois | 60 min |
| Apr 13, 4:54 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Washington | 66 min |
| Apr 13, 4:54 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 66 min |
| Apr 13, 5:19 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 41 min |
| Apr 13, 5:36 PM CDT | Tornado Warning | LSX | Saint Louis | 54 min |
| Apr 13, 5:42 PM CDT | Tornado Warning | LSX | Sainte Genevieve | 63 min |
| Apr 13, 5:50 PM CDT | Tornado Warning | LSX | City of Saint Louis | 40 min |
| Apr 13, 5:56 PM CDT | Tornado Warning | LSX | Jefferson | 49 min |
| Apr 13, 6:19 PM CDT | Tornado Warning | LSX | Iron, Reynolds | 41 min |
| Apr 13, 6:32 PM CDT | Tornado Warning | LSX | Madison | 58 min |
Nearby
Tornado Warnings in Missouri, 1998Every tornado warning in 1998Tornadoes in 1998
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.