Alert archive / Missouri / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 26, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 18, 1997, 9:58 PM CDT for City of Saint Louis, Missouri. It was in force for 32 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
- Apr 18, 1997, 9:58 PM CDT (02:58 UTC)
- Expired
- Apr 18, 1997, 10:30 PM CDT
- In force
- 32 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 02:57 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 |
|---|---|---|---|
| Apr 18, 9:15 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 3.0 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
- 2539 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 257 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 190301 RRA SVRSTL MOC183-189-510-190330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 958 PM CDT FRI APR 18 1997 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MISSOURI ...ST. CHARLES COUNTY...ST. LOUIS COUNTY AND THE INDEPENDENT CITY OF ...ST. LOUIS CITY AT 957 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTH ST. CHARLES COUNTY MOVING SOUTHEAST AT 35 MPH. ST.PETERS...ST. CHARLES...FLORISSANT AND ST. LOUIS CITY ARE IN THE PATH OF THIS STORM. HAIL UP TO 1 INCH IN DIAMETER ALONG WITH WINDS AROUND 60 MPH CAN BE EXPECTED WITH THIS STORM. JPK
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 8:07 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 38 min |
| Apr 18, 8:42 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Warren | 33 min |
| Apr 18, 8:51 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 39 min |
| Apr 18, 8:58 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Pike, Ralls | 47 min |
| Apr 18, 9:00 PM CDT | Severe Thunderstorm Warning | LSX | Boone, Callaway | 45 min |
| Apr 18, 9:45 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 45 min |
| Apr 18, 9:58 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 32 min |
| Apr 18, 10:07 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau | 38 min |
| Apr 18, 10:25 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 50 min |
| Apr 18, 10:54 PM CDT | Severe Thunderstorm Warning | LSX | Boone | 51 min |
| Apr 19, 1:11 AM CDT | Severe Thunderstorm Warning | LSX | Franklin | 34 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 1997Every severe thunderstorm warning in 1997
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.