Alert archive / Missouri / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 50, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 2, 1997, 9:37 PM CDT for Knox County, Missouri. It was in force for 53 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 2, 1997, 9:37 PM CDT (02:37 UTC)
- Expired
- May 2, 1997, 10:30 PM CDT
- In force
- 53 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Knox County, MO
The radar
The St Louis radar (KLSX), 203 km from the middle of the area, began a volume at 02:40 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
Davenport, (KDVN), launched 00:00Z, 2.6 hours before the alert went out and 216 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
- 483 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 65 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 030238 RRA SVRSTL MOC103-030330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 937 PM CDT FRI MAY 2 1997 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST MISSOURI ...KNOX COUNTY AT 937 PM...NWS DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM JUST ENTERING SOUTHWEST KNOX COUNTY. THIS STORM WAS MOVING NORTHEAST AT 35 MPH. HAIL TO ONE INCH IN DIAMETER CAN BE EXPECTED WITH THIS STORM AS IT MOVES THROUGH NOVELTY. THIS IS A DANGEROUS STORM! BE PREPARED FOR DAMAGING WINDS...HAIL AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS. FG/RP
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 2, 7:18 PM CDT, 2 hours 19 minutes before
ILZ064-065-069-070-074-079-100>102-MOZ041-047>051-059>065-072>075- 084-085-099-030315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 716 PM CDT FRI MAY 2 1997 ...TORNADO WATCH 233 FOR SOUTHEAST MISSOURI AND A SMALL PORTION OF SOUTHWEST ILLINOIS HAS EXPIRED... ...SEVERE THUNDERSTORM WATCH 235 IS NO LONGER IN EFFECT FOR PORTIONS OF CENTRAL MISSOURI... THE TORNADO WATCH WHICH WAS ISSUED FOR A LARGE PORTION OF SOUTHEAST MISSOURI AND MUCH OF SOUTHWEST AND SOUTHERN ILLINOIS HAS EXPIRED AND IS NO LONGER IN EFFECT. THE WATCH HAS EXPIRED FOR THE FOLLOWING COUNTIES IN ILLINOIS...FAYETTE...MARION...BOND...CLINTON... WASHINGTON...AND RANDOLPH COUNTIES. IN MISSOURI...STE. GENEVIEVE..ST. FRANCOIS...AND MADISON COUNTIES IN SOUTHEAST MISSOURI. FURTHER WEST...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR A LARGE PART OF SOUTHEAST AND EAST CENTRAL MISSOURI...BUT HAS BEEN CANCELLED FOR SIX COUNTIES IN CENTRAL MISSOURI...BOONE...MONITEAU.. COLE...CALLAWAY...OSAGE...MONTGOMERY COUNTIES IN CENTRAL MISSOURI. THIS INCLUDES THE CITIES OF JEFFERSON CITY AND COLUMBIA. LOCALLY SEVERE THUNDERSTORMS ARE STILL A POSSIBILITY FOR MUCH OF THE REST OF THE AREA THIS EVENING AND SEVER E THUNDERSTORM WATCH 235 REMAINS IN EFFECT...INCLUDING THE ST LOUIS METRO AREA. RESIDENTS SHOULD KEEP ABREAST OF LOCAL WEATHER CONDITIONS AND POSSIBLE SEVERE WEATHER WARNINGS OR STATEMENTS FROM THE NATIONAL WEATHER SERVICE. PEDIGO
Special weather statement, May 2, 7:20 PM CDT, 2 hours 17 minutes before
MOZ070-081>082-091>092-096-105-030315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 720 PM CDT FRI MAY 2 1997 THE NATIONAL WEATHER SERVICE IN SPRINGFIELD MO HAS CANCELLED SEVERE THUNDERSTORM WATCH NUMBER 235 FOR THE FOLLOWING COUNTIES... MILLER PULASKI LACLEDE WEBSTER WRIGHT DOUGLAS OZARK THE WATCH REMAINS IN EFFECT FOR HOWELL TEXAS PHELPS MARIES DENT SHANNON AND OREGON COUNTIES UNTIL 10PM. THE AREA OF STRONG TO SEVERE THUNDERSTORMS WHICH PUSHED THROUGH SECTIONS OF SOUTHWEST MISSOURI EARLIER THIS EVENING HAS MOVED INTO SOUTH CENTRAL MISSOURI AND WILL NO LONGER AFFECT THE COUNTIES BEING CLEARED FROM THE WATCH. THE STORMS ARE EXPECTED TO PUSH OUT OF SOUTH CENTRAL MISSOURI BY 9PM. LINDENBERG
Special weather statement, May 2, 8:10 PM CDT, 1 hour 27 minutes before
MOZ059>062-072-030315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 810 PM CDT FRI MAY 2 1997 ...SEVERE THUNDERSTORM WATCH 235 IS NO LONGER IN EFFECT FOR PORTIONS OF EAST CENTRAL MISSOURI... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS CANCELLED SEVERE THUNDERSTORM WATCH NUMBER 235 FOR THE FOLLOWING COUNTIES IN EAST CENTRAL MISSOURI... ST. CHARLES...WARREN...FRANKLIN...CRAWFORD...AND GASCONADE COUNTIES...INCLUDING THE CITIES OF ST. CHARLES...UNION...AND STEELEVILLE. SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THIS EVENING...BUT THE THREAT FOR SEVERE STORMS IN THE ABOVE MENTIONED AREAS HAS DIMINISHED SUBSTANTIALLY. PEDIGO
Special weather statement, May 2, 8:11 PM CDT, 1 hour 26 minutes before
MOZ059>062-072-030315- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 810 PM CDT FRI MAY 2 1997 ...SEVERE THUNDERSTORM WATCH 235 IS NO LONGER IN EFFECT FOR PORTIONS OF EAST CENTRAL MISSOURI... THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS CANCELLED SEVERE THUNDERSTORM WATCH NUMBER 235 FOR THE FOLLOWING COUNTIES IN EAST CENTRAL MISSOURI... ST. CHARLES...WARREN...FRANKLIN...CRAWFORD...AND GASCONADE COUNTIES...INCLUDING THE CITIES OF ST. CHARLES...UNION...AND STEELEVILLE. SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE THIS EVENING...BUT THE THREAT FOR SEVERE STORMS IN THE ABOVE MENTIONED AREAS HAS DIMINISHED SUBSTANTIALLY. PEDIGO
Special weather statement, May 2, 8:22 PM CDT, 1 hour 15 minutes before
MOZ058-071-082>083-097>098-106-030415- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 822 PM CDT FRI MAY 2 1997 ...SEVERE THUNDERSTORM WATCH 235 HAS BEEN CANCELLED FOR SOUTH CENTRAL MISSOURI... THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING SOUTH CENTRAL MISSOURI COUNTIES... MARIES PHELPS DENT TEXAS SHANNON HOWELL OREGON THE STRONG TO SEVERE THUNDERSTORMS HAVE PUSHED EAST OF THE AREA AND ARE NO LONGER A THREAT TO PRODUCE SEVERE WEATHER FOR THE ABOVE MENTIONED COUNTIES. LINDENBERG
Special weather statement, May 2, 9:23 PM CDT, 14 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-052-085-027-047- 051-034-049-036-035-099-061-075-074-063-064-009-026-060-073-ILZ095- 064-096-098-069-065-058-099-059-100-070-102-060-097-079-101-074- MOZ065-021600- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 920 PM CST FRI MAY 2 1997 THIS OUTLOOK COVERS THE COUNTY WARNING AREA OF THE NWS OFFICE IN ST LOUIS. AREAS INCLUDED ARE PARTS OF CENTRAL...NORTHEAST AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE ENTIRE FORECAST AREA FOR THE REST OF THE NIGHT INCLUDING CENTRAL... NORTHEAST...AND EAST CENTRAL MISSOURI...AND SOUTHWEST ILLINOIS. . A DEEP STORM SYSTEM MOVING ACROSS MISSOURI THROUGH THE NIGHT WILL SPAWN SCATTERED THUNDERSTORMS AND A CHANCE FOR HAIL OR DAMAGING WINDS. THE GREATEST SEVERE WEATHER THREAT WILL BE LARGE HAIL AND DAMAGING WINDS. STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD MONITOR LA0TER FORECASTS AND STATEMENTS AND BE PREPARED FOR SKYWARN ACTION TONIGHT. PEDIGO
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 8:53 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Boone | 52 min |
| May 2, 9:01 PM CDT | Severe Thunderstorm Warning | LSX | Monroe | 44 min |
| May 2, 9:19 PM CDT | Severe Thunderstorm Warning | LSX | Ralls | 41 min |
| May 2, 9:30 PM CDT | Severe Thunderstorm Warning | LSX | Scotland | 45 min |
| May 2, 10:08 PM CDT | Severe Thunderstorm Warning | LSX | Shelby | 52 min |
| May 2, 10:25 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 50 min |
| May 2, 10:35 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery | 40 min |
| May 2, 10:44 PM CDT | Severe Thunderstorm Warning | LSX | Pike, Ralls | 31 min |
| May 2, 11:21 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 39 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.