Alert archive / Missouri / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 18, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Apr 5, 1997, 1:29 PM CST for Clark 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
- Apr 5, 1997, 1:29 PM CST (19:29 UTC)
- Expired
- Apr 5, 1997, 2:00 PM CST
- In force
- 31 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Clark County, MO
The radar
The Quad Cities radar (KDVN), 165 km from the middle of the area, began a volume at 19:30 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 12:00Z, 7.5 hours before the alert went out and 170 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
- 515 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 94 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.
000 TTAA00 KSTL 051928 RRA SVRSTL MOC045-052000- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 129 PM CST SAT APR 5 1997 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 200 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST MISSOURI ...CLARK COUNTY AT 128 PM CDT...NWS DOPPLER RADAR SHOWED A NARROW LINE OF SEVERE THUNDERSTORMS ENTERING WESTERN AND CENTRAL CLARK COUNTY. THIS LINE OF SEVERE THUNDERSTORMS WILL BE MOVING THROUGH THE TOWNS OF KOHOKA...SAINT FRANCISVILLE AND WAYLAND. THE LINE OF SEVERE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 35 MPH. THIS STORM HAS A HISTORY OF DAMAGING WINDS. SEEK INSIDE SHELTER NOW!
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, Apr 5, 10:00 AM CST, 3 hours 29 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- MOZ065-051700- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1000 AM CST SAT APR 5 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. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE AREA THIS AFTERNOON. THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS EAST OF A LINE FROM ST LOUIS TO FREDERICKTOWN MISSOURI AND SOUTH OF A LINE FROM ST LOUIS TO SALEM ILLINOIS. THIS COVERS A SMALL PORTION OF SOUTHEAST ILLINOIS AND A LARGER PORTION OF SOUTHERN ILLINOIS. THIS ACTIVITY WILL END BY EVENING...MOVING ON TO THE EAST...SO THE THREAT WILL BE CONFINED TO THE AFTERNOON HOURS. . SPOTTERS IN THESE AREAS SHOULD KEEP ABREAST OF LOCAL WEATHER CONDITIONS...AND BE PREPARED FOR POSSIBLE ACTIVATION. PEDIGO
Special weather statement, Apr 5, 10:03 AM CST, 3 hours 26 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- MOZ065-051700- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1000 AM CST SAT APR 5 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. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE AREA THIS AFTERNOON. THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS EAST OF A LINE FROM ST LOUIS TO FREDERICKTOWN MISSOURI AND SOUTH OF A LINE FROM ST LOUIS TO SALEM ILLINOIS. THIS COVERS A SMALL PORTION OF SOUTHEAST ILLINOIS AND A LARGER PORTION OF SOUTHERN ILLINOIS. THIS ACTIVITY WILL END BY EVENING...MOVING ON TO THE EAST...SO THE THREAT WILL BE CONFINED TO THE AFTERNOON HOURS. . SPOTTERS IN THESE `AREAS SHOULD KEEP ABREAST OF LOCAL WEATHER CONDITIONS...AND BE PREPARED FOR POSSIBLE ACTIVATION. PEDIGO
Special weather statement, Apr 5, 10:07 AM CST, 3 hours 22 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- MOZ065-051700- SEVERE WEATHER OUTLOOK...CORRECTION LINE 5...SHOULD BE "MISSOURI" NATIONAL WEATHER SERVICE ST LOUIS MO 1008 AM CST SAT APR 5 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. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE AREA THIS AFTERNOON. THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS EAST OF A LINE FROM ST LOUIS TO FREDERICKTOWN MISSOURI AND SOUTH OF A LINE FROM ST LOUIS TO SALEM ILLINOIS. THIS COVERS A SMALL PORTION OF SOUTHEAST MISSOURI AND A LARGER PORTION OF SOUTHERN ILLINOIS. THIS ACTIVITY WILL END BY EVENING...MOVING ON TO THE EAST...SO THE THREAT WILL BE CONFINED TO THE AFTERNOON HOURS. . SPOTTERS IN THESE AREAS SHOULD KEEP ABREAST OF LOCAL WEATHER CONDITIONS...AND BE PREPARED FOR POSSIBLE ACTIVATION. PEDIGO
Special weather statement, Apr 5, 10:08 AM CST, 3 hours 21 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- MOZ065-051700- SEVERE WEATHER OUTLOOK...CORRECTION LINE 5...SHOULD BE MISSOURI NATIONAL WEATHER SERVICE ST LOUIS MO 1008 AM CST SAT APR 5 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. SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE AREA THIS AFTERNOON. THERE IS A SLIGHT CHANCE FOR SEVERE THUNDERSTORMS EAST OF A LINE FROM ST LOUIS TO FREDERICKTOWN MISSOURI AND SOUTH OF A LINE FROM ST LOUIS TO SALEM ILLINOIS. THIS COVERS A SMALL PORTION OF SOUTHEAST MISSOURI AND A LARGER PORTION OF SOUTHERN ILLINOIS. THIS ACTIVITY WILL END BY EVENING...MOVING ON TO THE EAST...SO THE THREAT WILL BE CONFINED TO THE AFTERNOON HOURS. . SPOTTERS IN THESE AREAS SHOULD KEEP ABREAST OF LOCAL WEATHER CONDITIONS...AND BE PREPARED FOR POSSIBLE ACTIVATION. PEDIGO
Special weather statement, Apr 5, 1:16 PM CST, 13 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- MOZ065-061100- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 115 PM CST SAT APR 5 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. A LINE OF SHOWERS AND THUNDERSTORMS WILL RACE NORTHEAST OUT OF MISSOURI AND ACROSS CENTRAL AND SOUTHERN ILLINOIS THIS AFTERNOON. THERE IS A SLIGHT CHANCE THAT SOME OF THESE STORMS COULD BECOME SEVERE NORTH AND EAST OF A LINE FROM QUINCY ILLINOIS TO ST LOUIS TO EFFINGHAM. THE THREAT HAS LESSENED FURTHER SOUTH AND WEST...INCLUDING MOST OF MISSOURI. THE BEST CHANCE WILL BE OVER CENTRAL ILLINOIS THIS AFTERNOON. THE STORMS WILL MOVE NORTHEAST OUT OF THE ENTIRE ST LOUIjS COUNTY WARNING AREA BY LATE THIS AFTERNOON. SPOTTERS IN THESE AREAS SHOULD KEEP ABREAST OF LOCAL WEATHER CONDITIONS...AND BE PREPARED FOR POSSIBLE ACTIVATION BETWEEN NOW AND 6 PM THIS EVENING. PEDIGO
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.