Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 257, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 19, 1998, 11:39 PM CDT for Saint Charles County, Saint Louis County, Missouri. It was in force for 61 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
- Jun 19, 1998, 11:39 PM CDT (04:39 UTC)
- Expired
- Jun 20, 1998, 12:40 AM CDT
- In force
- 61 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
The radar
The St Louis radar (KLSX), 11 km from the middle of the area, began a volume at 04:40 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, 4.7 hours before the alert went out and 232 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
- 2156 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
038 WUUS1 KSTL 200438 RRA SVRSTL MOC183-189-200540- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1139 PM CDT FRI JUN 19 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... ST CHARLES COUNTY IN EAST CENTRAL MISSOURI ST LOUIS COUNTY IN EAST CENTRAL MISSOURI * UNTIL 1240 AM CDT * AT 1140 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM MARTHASVILLE TO NEAR ST CLAIR... MOVING EAST NORTHEAST AT 25 MPH. * LOCATIONS THAT WILL BE AFFECTED... ST CHARLES DEFIANCE NEW MELLE BALLWIN CHESTERFIELD ST PETERS 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. FG/DM
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 10:04 PM CDT | Severe Thunderstorm Warning | LSX | Gasconade, Osage | 61 min |
| Jun 19, 10:30 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 50 min |
| Jun 19, 11:03 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Warren | 62 min |
| Jun 20, 1:38 AM CDT | Severe Thunderstorm Warning | LSX | Cole, Osage | 62 min |
| Jun 20, 1:38 AM CDT | Severe Thunderstorm Warning | LSX | Moniteau | 62 min |
| Jun 20, 3:34 AM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 51 min |
| Jun 20, 4:39 AM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison | 46 min |
| Jun 20, 12:00 PM CDT | Severe Thunderstorm Warning | LSX | Moniteau | 45 min |
| Jun 20, 12:54 PM CDT | Flash Flood Warning | LSX | Moniteau | 2 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.