Alert archive / Missouri / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 252, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 18, 1998, 11:10 PM CDT for Sainte Genevieve County, Missouri. It was in force for 50 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 18, 1998, 11:10 PM CDT (04:10 UTC)
- Expired
- Jun 19, 1998, 12:00 AM CDT
- In force
- 50 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Sainte Genevieve County, MO
The radar
The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 04:13 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 |
|---|---|---|---|
| Jun 18, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 4.2 hours before the alert went out and 286 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
- 2675 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1092 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 17.5
The text
As transmitted, in the capitals the NWS used until 2016.
036 WUUS1 KSTL 190411 RRA SVRSTL MOC186-190500- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 1110 PM CDT THU JUN 18 1998 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN STE GENEVIEVE COUNTY IN EAST CENTRAL MISSOURI * UNTIL 1200 AM CDT * AT 1110 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR COFFMAN... MOVING EAST AT 40 MPH. * LOCATIONS THAT WILL BE AFFECTED... COFFMAN WOMAC ST MARY THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING WINDS. MOVE QUICKLY TO A STURDY BUILDING AND STAY AWAY FROM DOORS AND WINDOWS. GLASS/TRUETT
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 7:01 PM CDT | Severe Thunderstorm Warning | LSX | Callaway | 49 min |
| Jun 18, 7:09 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 46 min |
| Jun 18, 7:14 PM CDT | Tornado Warning | LSX | Osage | 36 min |
| Jun 18, 7:28 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Warren | 52 min |
| Jun 18, 8:45 PM CDT | Severe Thunderstorm Warning | LSX | Crawford, Franklin, Washington | 50 min |
| Jun 18, 9:07 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson | 48 min |
| Jun 18, 9:25 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve, Saint Francois | 35 min |
| Jun 18, 10:10 PM CDT | Tornado Warning | LSX | Reynolds | 65 min |
| Jun 18, 10:25 PM CDT | Severe Thunderstorm Warning | LSX | Iron | 65 min |
| Jun 18, 10:59 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Francois | 46 min |
| Jun 18, 11:14 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 51 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.