Alert archive / Missouri / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 221, NWS St. Louis, MO

August 7, 1996Monroe County, Shelby County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Aug 7, 1996, 5:09 PM CDT for Monroe County, Shelby County, Missouri. It was in force for 66 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 7, 1996, 5:09 PM CDT (22:09 UTC)
Expired: Aug 7, 1996, 6:15 PM CDT
In force: 66 min
Issued by: NWS St. Louis, MO
Area: Whole counties

Counties Monroe County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 157 km from the middle of the area, began a volume at 22:10 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, 10.2 hours before the alert went out and 255 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 867 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 905 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: -22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 072207
SVRSTL
MOC137-205-072315-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
509 PM CDT WED AUG 7 1996
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST MISSOURI
 
   ...MONROE COUNTY...SHELBY COUNTY
 
AT 505 PM CDT...NWS DOPPLER RADAR SHOWED AN AREA OF SEVERE THUNDERSTORMS
ACROSS THE NORTHWEST HALF OF SHELBY COUNTY.
 
THE SEVERE THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT 15 TO 25 MPH
AND WILL MOVE THROUGH THE COMMUNITIES OF SHELBYVILLE...SHELBINA
...MONROE CITY AND MARK TWAIN LAKE.
 
DAMAGING WINDS AND HAIL CAN BE EXPbECTED WITH THESE STORMS.
 
THIS IS A DANGEROUS STORM! BE PREPARED FOR DAMAGING WINDS...HAIL
AND DEADLY LIGHTNING. STAY INSIDE AND AWAY FROM WINDOWS.
 
TS/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, Aug 7, 1:52 PM CDT, 3 hours 17 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-
MOZ065-080900-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ST LOUIS MO
145 PM CDT WED AUG 7 1996

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 THROUGHOUT THE AREA
THIS AFTERNOON AND TONIGHT.  WHILE A FEW SPOTTY THUNDERSTORMS HAVE
BEEN FORMING SOUTH AND EAST OF ST LOUIS EARLY THIS AFTERNOON...IT
APPEARS THAT THE MAIN ZSEVERE WEATHER THREAT WILL OCCUR LATE THIS
AFTERNOON AND TONIGHT...AS A COLD FRONT BEGINS TO PUSH INTO THE
AREA.

STORM SPOTTER GROUPS AND EMERGENCY MANAGERS SHOULD KEEP ADVISED OF
THE LATEST FORECAST FOR POSSIBLE SKYWARN ACTION.

TRUETT

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 3:58 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Scotland	62 min
Aug 7, 4:30 PM CDT	Severe Thunderstorm Warning	LSX	Clark, Lewis	60 min
Aug 7, 4:41 PM CDT	Severe Thunderstorm Warning	LSX	Lewis	64 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1996 Every severe thunderstorm warning in 1996

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.