Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 85, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 6, 1998, 9:12 PM CDT for Saint Louis 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 6, 1998, 9:12 PM CDT (02:12 UTC)
- Expired
- May 6, 1998, 10:00 PM CDT
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Saint Louis County, MO
The radar
The St Louis radar (KLSX), 22 km from the middle of the area, began a volume at 02:15 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 nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 2.2 hours before the alert went out and 231 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
- 102 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 507 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
614 WUUS1 KSTL 070215 RRA SVRSTL MOC189-070300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 912 PM CDT WED MAY 6 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ST LOUIS COUNTY IN EAST CENTRAL MISSOURI * UNTIL 1000 PM CDT * AT AT 912 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR CHESTERFIELD... MOVING NORTHEAST AT 20 MPH. * LOCATIONS THAT WILL BE AFFECTED... CLAYTON FLORRISANT 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. TRUETT/GKS
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 6, 8:11 PM CDT, 1 hour 1 minute before
MOZ099-070615- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 811 PM CDT WED MAY 6 1998 ...A TORNADO WATCH IS NOW IN EFFECT FOR REYNOLDS COUNTY UNTIL 2 AM... THE TORNADO WATCH THAT COVERED THE SOUTHERN THIRD OF MISSOURI HAS BEEN REPLACED BY A NEW TORNADO WATCH THAT COVERS SOUTHWEST AND SOUTH CENTRAL MISSOURI...INCLUDING REYNOLDS COUNTY. THE NEW TORNADO WATCH...NUMBER 297...IS IN EFFECT UNTIL 2 AM CDT. FERRY
Special weather statement, May 6, 8:11 PM CDT, 1 hour 1 minute before
MOZ099-070615- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 811 PM CDT WED MAY 6 1998 ...A TORNADO WATCH IS NOW IN EFFECT FOR REYNOLDS COUNTY UNTIL 2 AM... THE TORNADO WATCH THAT COVERED THE SOUTHERN THIRD OF MISSOURI HAS BEEN REPLACED BY A NEW TORNADO WATCH THAT COVERS SOUTHWEST AND SOUTH CENTRAL MISSOURI...INCLUDING REYNOLDS COUNTY. THE NEW TORNADO WATCH...NUMBER 297...IS IN EFFECT UNTIL 2 AM CDT. FERRY
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 7:53 PM CDT | Severe Thunderstorm Warning | LSX | Ralls | 32 min |
| May 6, 8:19 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson | 46 min |
| May 6, 9:30 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 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.