Alert archive / Missouri / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 157, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 30, 1997, 6:14 PM CDT for Jefferson County, Missouri. It was in force for 31 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
- Aug 30, 1997, 6:14 PM CDT (23:14 UTC)
- Expired
- Aug 30, 1997, 6:45 PM CDT
- In force
- 31 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Jefferson County, MO
The radar
The St Louis radar (KLSX), 50 km from the middle of the area, began a volume at 23:16 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 12:00Z, 11.2 hours before the alert went out and 268 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
- 35 J/kg
- Mixed-layer CIN
- -156 J/kg
- Mixed-layer LCL
- 770 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
893 WUUS1 KSTL 302315 RRA SVRSTL MOC099-302345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 614 PM CDT SAT AUG 30 1997 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN EAST CENTRAL MISSOURI ...SOUTHERN JEFFERSON COUNTY AT 613 PM...WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM NEAR DESOTO...MOVING SOUTHEAST AT 10 MPH. TOWNS IN THE PATH OF THIS STORM INCLUDE VALLES MINES AND OLYMPIAN VILLAGE. THIS IS A DANGEROUS STORM BE PREPARED FOR DAMAGING WINDS...HAIL AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS. FERRY/TRUETT
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, Aug 30, 1:41 PM CDT, 4 hours 33 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-310030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 141 PM CDT SAT AUG 30 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST ILLINOIS. SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS A GOOD PORTION OF EASTERN MISSOURI AND WESTERN ILLINOIS THIS AFTERNOON AND TONIGHT. THE GREATEST THREAT FOR SEVERE THUNDERSTORMS WILL BE SOUTHEAST OF A LINE FROM JEFFERSON CITY TO ST LOUIS TO CAPE GIRARDEAU. THE MAIN WEATHER THREAT WILL BE DAMAGING WIND GUSTS WITH STRONGER STORMS. SOME SMALL HAIL MAY BE POSSIBLE...TOO. SPOTTER ACTIVATION MAY BE REQUIRED LATER ON THIS AFTERNOON AND TONIGHT. METZE
Special weather statement, Aug 30, 1:41 PM CDT, 4 hours 33 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-310030- SEVERE WEATHER OUTLOOK...CORRECT HEADER NATIONAL WEATHER SERVICE ST LOUIS MO 141 PM CDT SAT AUG 30 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST ILLINOIS. SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS A GOOD PORTION OF EASTERN MISSOURI AND WESTERN ILLINOIS THIS AFTERNOON AND TONIGHT. THE GREATEST THREAT FOR SEVERE THUNDERSTORMS WILL BE SOUTHEAST OF A LINE FROM JEFFERSON CITY TO ST LOUIS TO CAPE GIRARDEAU. THE MAIN WEATHER THREAT WILL BE DAMAGING WIND GUSTS WITH STRONGER STORMS. SOME SMALL HAIL MAY BE POSSIBLE...TOO. SPOTTER ACTIVATION MAY BE REQUIRED LATER ON THIS AFTERNOON AND TONIGHT. METZE
Special weather statement, Aug 30, 1:42 PM CDT, 4 hours 32 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-310030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 141 PM CDT SAT AUG 30 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST ILLINOIS. SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS A GOOD PORTION OF EASTERN MISSOURI AND WESTERN ILLINOIS THIS AFTERNOON AND TONIGHT. THE GREATEST THREAT FOR SEVERE THUNDERSTORMS WILL BE SOUTHEAST OF A LINE FROM JEFFERSON CITY TO ST LOUIS TO CAPE GIRARDEAU. THE MAIN WEATHER THREAT WILL BE DAMAGING WIND GUSTS WITH STRONGER STORMS. SOME SMALL HAIL MAY BE POSSIBLE...TOO. SPOTTER ACTIVATION MAY BE REQUIRED LATER ON THIS AFTERNOON AND TONIGHT. METZE
Special weather statement, Aug 30, 1:43 PM CDT, 4 hours 31 minutes before
ILZ058>060-064-065-069-070-074-079-095>102-MOZ009-010-018-019-026- 027-034>036-041-042-047>052-059>065-072>075-084-085-099-310030- SEVERE WEATHER OUTLOOK...CORRECT HEADER NATIONAL WEATHER SERVICE ST LOUIS MO 141 PM CDT SAT AUG 30 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND EXTREME SOUTHWEST ILLINOIS. SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS A GOOD PORTION OF EASTERN MISSOURI AND WESTERN ILLINOIS THIS AFTERNOON AND TONIGHT. THE GREATEST THREAT FOR SEVERE THUNDERSTORMS WILL BE SOUTHEAST OF A LINE FROM JEFFERSON CITY TO ST LOUIS TO CAPE GIRARDEAU. THE MAIN WEATHER THREAT WILL BE DAMAGING WIND GUSTS WITH STRONGER STORMS. SOME SMALL HAIL MAY BE POSSIBLE...TOO. SPOTTER ACTIVATION MAY BE REQUIRED LATER ON THIS AFTERNOON AND TONIGHT. METZE
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.