Alert archive / Missouri / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 21, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 15, 1990, 4:45 PM CDT for Franklin County, Missouri. It was in force for 45 min. 1 report 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
- May 15, 1990, 4:45 PM CDT (21:45 UTC)
- Expired
- May 15, 1990, 5:30 PM CDT
- In force
- 45 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Franklin County, MO
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 15, 5:12 PM CDT | Hail 0.75 | Franklin, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 9.8 hours before the alert went out and 257 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
- 0 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KSTL 152151
SVRSTL
ILC119-MOC071-189-510-152230-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
445 PM CDT TUE MAY 15 1990
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 530 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTHWEST ILLINOIS
...MADISON
IN EAST CENTRAL MISSOURI
...FRANKLIN...ST LOUIS...ST LOUIS CITY
A LINE OF SEVERE THUNDERSTORMS EXTENDED FROM JERSEYVILLE
ILLINOIS TO ST PETERS TO WASHINGTON MISSOURI. THIS WAS JUST WEST
OF THE ST LOUIS METRO AREA. 3/4 INCH HAIL WAS REPORTED AT
WENTZVILLE. 1 INCH HAIL AT WASHINGTON.
LARGE HAIL..FREQUENT LIGHTNING..GUSTY WINDS AND TORRENTIAL
RAIN THAT WILL FLOOD ROADS WILL ACCOMPANY THE STORMS
PASSAGE. RUSH HOUR IN ST LOUIS WILL BE DISRUPTED BY THESE
SEVERE STORMS.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
FELDTThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 4:45 AM CDT | Flash Flood Warning | LSX | Warren | 4 hr |
| May 15, 3:31 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 44 min |
| May 15, 4:07 PM CDT | Severe Thunderstorm Warning | LSX | Warren | 38 min |
| May 15, 4:16 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Warren | 44 min |
| May 15, 4:45 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 45 min |
| May 15, 5:27 PM CDT | Tornado Warning | LSX | Saint Louis, City of Saint Louis | 48 min |
| May 15, 5:39 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 51 min |
| May 15, 6:07 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 53 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1990Every severe thunderstorm warning in 1990
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.