Alert archive / Missouri / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 49, NWS Springfield, MO

May 5, 1991Dallas County, Webster County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at May 5, 1991, 12:06 AM CDT for Dallas County, Webster County, Missouri. It was in force for 69 min.

The area

The counties it named.

The facts

Issued: May 5, 1991, 12:06 AM CDT (05:06 UTC)
Expired: May 5, 1991, 1:15 AM CDT
In force: 69 min
Issued by: NWS Springfield, MO
Area: Whole counties

Counties Dallas County, MO, Webster County, MO

The nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 5.1 hours before the alert went out and 99 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: 2434 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1078 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 8.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSGF 050506
SVRSGF
MOC225-059-067-050615-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1206 AM CDT SUN MAY 5 1991

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 115 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE SOUTHWEST PART OF MISSOURI
      WEBSTER...DALLAS...WESTERN DOUGLAS

AT 1203 AM CDT RADAR INDICATED A SEVERE THUNDERSTORMS IN NORTHEAST
GREENE COUNTY MOVING TO THE NORTHEAST AT 20 MILES PER HOUR. A
SEVERE THUNDERSTORM WAS ALSO OVER WESTERN DOUGLAS COUNTY. 3/4
TO 1 INCH HAIL HAS BEEN REPORTED WITH THESE STORMS.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADWAYS QUICKLY...
AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.

 MURPHY0

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 4, 6:58 PM CDT, 5 hours 8 minutes before

MOZ015-016-019-020-021-050045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
655 PM CDT SAT MAY 4 1991

...A TORNADO WATCH IS IN EFFECT UNTIL MIDNIGHT FOR MUCH OF SOUTHWEST
MISSOURI...

RADAR AT 650 PM SHOWED NUMEROUS THUNDERSTORMS OVER NORTHEAST OKLAHOMA
AND SOUTHEAST KANSAS.  THE STORMS WERE MOVING NORTHEAST 35 MPH.  THE
THUNDERSTORMS HAD ENTERED WEST CENTRAL MISSOURI NORTH OF VERNON
COUNTY.

THE THUNDERSTORMS OVER NORTHEA*ST OKLAHOMA WILL MOVE INTO THE SOUTHWEST
PART OF MISSOURI BY 800 PM.

TORNADO WATCH NUMBER 276 IS IN EFFECT UNTIL MIDNIGHT FOR MUCH OF SOUTHWEST
MISSOURI INCLUDING THE CITIES OF JOPLIN AND SPRINGFIELD.

LEE

Special weather statement, May 4, 11:30 PM CDT, 36 minutes before

MOZ015-016-019-020-021-050530-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1130 PM CDT SAT MAY 5 1991

...A LINE OF STRONG THUNDERSTORMS IS MOVING ACROSS GREENE COUNTY...

RADAR AT 1125 PM INDICATED A LINE OF STRONG THUNDERSTORMS OVER WESTERN
GREENE COUNTY MOVING NORTHEAST 20 MPH.

THE LINE WILL MOVE ACROSS THE CITY OF SPRINGFIELD BY 1145 PM.  THESE
THUNDERSTORMS WILL PRODUCE HEAVY RAIN...STRONG GUSTY WIND...DANGEROUS
LIGHTNING...AND HAIL.

A TORNADO WATCH REMAINS IN EFFECT FOR MUCH OF SOUTHWEST AND SOUTH CENTRAL
MISSOURI.

PEOPLE SHOULD BE ALERT FOR LATER WEATHER BULLETINS CONCERNING THE STORMS
AND BE PREPARED TO MOVE TO SAFETY IF A WARNING IS REQUIRED.

LEE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 7:50 PM CDT	Severe Thunderstorm Warning	SGF	McDonald	55 min
May 4, 7:50 PM CDT	Severe Thunderstorm Warning	SGF	Vernon	55 min
May 4, 8:47 PM CDT	Severe Thunderstorm Warning	SGF	Vernon	28 min
May 4, 8:47 PM CDT	Severe Thunderstorm Warning	SGF	McDonald	58 min
May 4, 9:45 PM CDT	Severe Thunderstorm Warning	SGF	McDonald, Newton	60 min
May 4, 9:45 PM CDT	Severe Thunderstorm Warning	SGF	Barton, Jasper	60 min
May 4, 10:17 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Lawrence	58 min
May 4, 10:17 PM CDT	Severe Thunderstorm Warning	SGF	Polk	58 min
May 4, 10:19 PM CDT	Severe Thunderstorm Warning	SGF	Dade, Lawrence	56 min
May 4, 10:19 PM CDT	Severe Thunderstorm Warning	SGF	Polk	56 min
May 4, 11:34 PM CDT	Severe Thunderstorm Warning	SGF	Greene	56 min
May 5, 12:06 AM CDT	Severe Thunderstorm Warning	SGF	Douglas	19 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1991 Every severe thunderstorm warning in 1991

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.