Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 124, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 21, 1998, 1:06 PM CDT for City of Saint Louis, Missouri. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 21, 1998, 1:06 PM CDT (18:06 UTC)
- Expired
- May 21, 1998, 1:50 PM CDT
- In force
- 44 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County City of Saint Louis, MO
The radar
The St Louis radar (KLSX), 43 km from the middle of the area, began a volume at 18:09 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.
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 21, 11:30 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 6.1 hours before the alert went out and 218 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
- 1212 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
658 WUUS1 KSTL 211808 RRA SVRSTL MOC510-211850- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 106 PM CDT THU MAY 21 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ST LOUIS CITY IN EAST CENTRAL MISSOURI * UNTIL 150 PM CDT * AT 104 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM FROM FLORISSANT TO BALLWIN... MOVING SOUTHEAST AT 40 MPH. * LOCATIONS THAT WILL BE AFFECTED... CITY OF ST. LOUIS BY 120 PM WIND GUST OF 59 MPH AT 1255 PM CDT SPIRIT OF ST. LOUIS AIRPORT IN CHESTERFIELD. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 60 MPH...DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OR YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. JPK/GS
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 21, 11:24 AM CDT, 1 hour 42 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-212300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1124 AM CDT THU MAY 21 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE ENTIRE COUNTY WARNING AREA THE REMAINDER OF TODAY AND TONIGHT. SEVERE THUNDERSTORM WATCH 384 REMAINS IN EFFECT UNTIL 100 PM FOR MUCH OF CENTRAL MISSOURI AND PORTIONS OF NORTHEAST MISSOURI. SEVERE THUNDERSTORM WATCH 386 IS IN EFFECT UNTIL 500 PM FOR MUCH OF EASTERN MISSOURI AND SOUTHWEST ILLINOIS. SKYWARN ACTIVATION AND SPOTTER ACTION IS NEEDED IN THE WATCH AREAS AND MAY BE REQUIRED IN ADDITIONAL AREAS THIS AFTERNOON AND TONIGHT. GLASS
Special weather statement, May 21, 11:24 AM CDT, 1 hour 42 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-212300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1124 AM CDT THU MAY 21 1998 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PORTIONS OF NORTHEAST...CENTRAL...EAST CENTRAL AND SOUTHEAST MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE ENTIRE COUNTY WARNING AREA THE REMAINDER OF TODAY AND TONIGHT. SEVERE THUNDERSTORM WATCH 384 REMAINS IN EFFECT UNTIL 100 PM FOR MUCH OF CENTRAL MISSOURI AND PORTIONS OF NORTHEAST MISSOURI. SEVERE THUNDERSTORM WATCH 386 IS IN EFFECT UNTIL 500 PM FOR MUCH OF EASTERN MISSOURI AND SOUTHWEST ILLINOIS. SKYWARN ACTIVATION AND SPOTTER ACTION IS NEEDED IN THE WATCH AREAS AND MAY BE REQUIRED IN ADDITIONAL AREAS THIS AFTERNOON AND TONIGHT. GLASS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 10:16 AM CDT | Severe Thunderstorm Warning | LSX | Shelby | 49 min |
| May 21, 10:58 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Monroe | 47 min |
| May 21, 11:29 AM CDT | Severe Thunderstorm Warning | LSX | Pike | 46 min |
| May 21, 11:41 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Montgomery | 44 min |
| May 21, 12:05 PM CDT | Severe Thunderstorm Warning | LSX | Callaway | 35 min |
| May 21, 12:13 PM CDT | Severe Thunderstorm Warning | LSX | Osage | 32 min |
| May 21, 12:25 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Warren | 50 min |
| May 21, 12:28 PM CDT | Severe Thunderstorm Warning | LSX | Gasconade | 47 min |
| May 21, 12:53 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis | 47 min |
| May 21, 12:57 PM CDT | Severe Thunderstorm Warning | LSX | Franklin | 48 min |
| May 21, 1:44 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 46 min |
| May 21, 1:54 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 46 min |
| May 21, 2:28 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison, Saint Francois | 52 min |
| May 21, 3:20 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison | 45 min |
| May 21, 6:30 PM CDT | Flash Flood Warning | LSX | Iron, Madison | 5 hr |
Nearby
Severe Thunderstorm Warnings in Missouri, 1998Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.