Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 132, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 21, 1998, 7:12 PM CDT for Madison County, Missouri. It was in force for 48 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, 7:12 PM CDT (00:12 UTC)
- Expired
- May 21, 1998, 8:00 PM CDT
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Madison County, MO
The radar
The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 00:13 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, 4:30 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 0.2 hours before the alert went out and 297 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
- 3010 J/kg
- Mixed-layer CIN
- -223 J/kg
- Mixed-layer LCL
- 1288 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -28 m²/s²
- 0-3 km storm-relative helicity
- 39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
840 WUUS1 KSTL 220013 RRA SVRSTL MOC123-220100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 712 PM CDT THU MAY 21 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MADISON COUNTY MISSOURI IN SOUTHEASTERN MISSOURI * UNTIL 800 PM CDT * AT 710 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 15 MILES SOUTHWEST OF FREDERICKTOWN... MOVING EAST SOUTHEAST AT 30 MPH. * LOCATIONS THAT WILL BE AFFECTED... MARQUAND THIS STORM HAS A HISTORY OF DAMAGING HAIL. STAY INSIDE AND AWAY FROM WINDOWS. GKS/DJP
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, 2:06 PM CDT, 5 hours 6 minutes before
ILZ058-059-099-MOZ061>064-212000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 206 PM CDT THU MAY 21 1998 ...SEVERE THUNDERSTORM WATCH 386 HAS BEEN CANCELLED FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS... THE FOLLOWING COUNTIES ARE NO LONGER IN ANY SEVERE THUNDERSTORM WATCH... IN MISSOURI...ST LOUIS COUNTY AND CITY...ST CHARLES...FRANKLIN IN ILLINOIS...GREENE...JERSEY...MACOUPIN .END GLASS
Special weather statement, May 21, 3:00 PM CDT, 4 hours 12 minutes before
ILZ060-064-100>102-MOZ065-072-073-212100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 300 PM CDT THU MAY 21 1998 ...SEVERE THUNDERSTORM WATCH 386 HAS BEEN CANCELLED FOR PORTIONS OF EAST CENTRAL MISSOURI AND SOUTHWEST ILLINOIS... THE FOLLOWING COUNTIES ARE NO LONGER IN ANY SEVERE THUNDERSTORM WATCH... IN MISSOURI...CRAWFORD...WASHINGTON...JEFFERSON IN ILLINOIS...MONROE...ST CLAIR...MADISON...BOND...MONTGOMERY .END GLASS
Special weather statement, May 21, 4:17 PM CDT, 2 hours 55 minutes before
ILZ079-212130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 417 PM CDT THU MAY 21 1998 ...SEVERE THUNDERSTORM WATCH #386 HAS BEEN CANCELLED FOR PORTIONS OF SOUTHWEST ILLINOIS... IN 6ILLINOIS...RANDOLPH COUNTY .END
Special weather statement, May 21, 4:17 PM CDT, 2 hours 55 minutes before
ILZ079-212130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 417 PM CDT THU MAY 21 1998 ...SEVERE THUNDERSTORM WATCH #386 HAS BEEN CANCELLED FOR PORTIONS OF SOUTHWEST ILLINOIS... IN 6ILLINOIS...RANDOLPH COUNTY .END
Special weather statement, May 21, 6:31 PM CDT, 41 minutes before
MOZ047>049-059-062-220000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 631 PM CDT THU MAY 21 1998 ...SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR A PORTION OF CENTRAL AND EAST CENTRAL MISSOURI... THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES... IN MISSOURI...MONITEAU...COLE...OSAGE...GASCONADE...FRANKLIN PERIODS OF SHOWERS OR THUNDERSTORMS WILL CONTINUE THIS EVENING ACROSS THE REGION...HOWEVER THE THREAT OF SEVERE THUNDERSTORMS HAS DIMINISHED. AMS
Special weather statement, May 21, 6:31 PM CDT, 41 minutes before
MOZ047>049-059-062-220000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 631 PM CDT THU MAY 21 1998 ...SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR A PORTION OF CENTRAL AND EAST CENTRAL MISSOURI... THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES... IN MISSOURI...MONITEAU...COLE...OSAGE...GASCONADE...FRANKLIN PERIODS OF SHOWERS OR THUNDERSTORMS WILL CONTINUE THIS EVENING ACROSS THE REGION...HOWEVER THE THREAT OF SEVERE THUNDERSTORMS HAS DIMINISHED. AMS
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 12:40 AM CDT | Severe Thunderstorm Warning | LSX | Scotland | 60 min |
| May 22, 1:04 AM CDT | Severe Thunderstorm Warning | LSX | Knox | 61 min |
| May 22, 1:20 AM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 65 min |
| May 22, 1:27 AM CDT | Severe Thunderstorm Warning | LSX | Clark, Lewis | 63 min |
| May 22, 1:52 AM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 63 min |
| May 22, 1:57 AM CDT | Severe Thunderstorm Warning | LSX | Marion, Shelby | 63 min |
| May 22, 2:34 AM CDT | Severe Thunderstorm Warning | LSX | Ralls | 61 min |
| May 22, 2:48 AM CDT | Severe Thunderstorm Warning | LSX | Pike | 62 min |
| May 22, 5:01 PM CDT | Severe Thunderstorm Warning | LSX | Osage | 49 min |
| May 22, 5:25 PM CDT | Severe Thunderstorm Warning | LSX | Gasconade | 45 min |
| May 22, 5:55 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 50 min |
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.