Alert archive / Missouri / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 145, NWS St. Louis, MO

July 19, 1997Monroe County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 19, 1997, 3:52 PM CDT for Monroe 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
Jul 19, 1997, 3:52 PM CDT (20:52 UTC)
Expired
Jul 19, 1997, 4:45 PM CDT
In force
53 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Monroe County, MO

The radar

The St Louis radar (KLSX), 144 km from the middle of the area, began a volume at 20:55 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, 8.9 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.

Skew-T log-pSkew-T log-p diagram, Davenport, at 12:00Z on 1997-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 232 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 1997-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 116 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
232 J/kg
Mixed-layer CIN
-190 J/kg
Mixed-layer LCL
1181 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
116 m²/s²
0-3 km storm-relative helicity
158 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTL 192054 RRA
SVRSTL
MOC137-192145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
352 PM CDT SAT JUL 19 1997
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST MISSOURI
 
   ...MONROE COUNTY
 
AT 350 PM...NWS DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM NEAR PARIS
AND WAS MOVING TO THE SOUTHEAST AROUND 10 MPH. COMMUNITIES IN THE PATH
ARE PARIS...MARK TWAIN LAKE AREA...AND SANTE FE. THIS STORMS WILL
PRODUCE DAMAGING WIND GUSTS UP TO 60 MPH AND ONE INCH DIAMETER HAIL.
 
THIS IS A DANGEROUS STORM! BE PREPARED FOR DAMAGING WINDS...HAIL
AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS.
 
RP/METZE

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, Jul 19, 10:45 AM CDT, 5 hours 7 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-065-052-085-027-047-
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-
200200-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1045 AM CDT SAT JUL 19 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.

WIDELY SCATTERED THUNDERSTORMS WERE PRESENT THIS MORNING OVER PORTIONS
OF WESTERN ILLINOIS AND EASTERN MISSOURI...THEY WILL BECOME MORE NUMEROUS
THIS AFTERNOON AND EARLY THIS EVENING.  ALSO THESE STORMS WILL PRODUCE
BRIEF HEAVY RAIN AND SMALL HAIL.

SKYWARN ACTIVATION IS NOT ANTICIPATED...BUT SPOTTERS AND EMERGENCY
MANAGERS SHOULD MONITOR THE LATEST STATEMENTS AND FORECASTS.
Special weather statement, Jul 19, 10:46 AM CDT, 5 hours 6 minutes before
MOZ042-041-050-010-048-072-062-059-084-018-019-065-052-085-027-047-
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-
200200-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
1045 AM CDT SAT JUL 19 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.

WIDELY SCATTERED THUNDERSTORMS WERE PRESENT THIS MORNING OVER PORTIONS
OF WESTERN ILLINOIS AND EASTERN MISSOURI...THEY WILL BECOME MORE NUMEROUS
THIS AFTERNOON AND EARLY THIS EVENING.  ALSO THESE STORMS WILL PRODUCE
BRIEF HEAVY RAIN AND SMALL HAIL.

SKYWARN ACTIVATION IS NOT ANTICIPATED...BUT SPOTTERS AND EMERGENCY
MANAGERS SHOULD MONITOR THE LATEST STATEMENTS AND FORECASTS.

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 19, 12:59 PM CDTSevere Thunderstorm WarningLSXMarion, Ralls46 min
Jul 19, 1:41 PM CDTSevere Thunderstorm WarningLSXLincoln49 min
Jul 19, 1:59 PM CDTSevere Thunderstorm WarningLSXClark46 min
Jul 19, 3:46 PM CDTSevere Thunderstorm WarningLSXSaint Charles44 min
Jul 19, 4:00 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis45 min
Jul 19, 5:41 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve34 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.