Alert archive / Missouri / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 52, NWS Springfield, MO

July 4, 1987Laclede County, Texas County, Wright County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 4, 1987, 11:29 AM CDT for Laclede County, Texas County, Wright County, Missouri. It was in force for 76 min.

The area

The counties it named.

The facts

Issued
Jul 4, 1987, 11:29 AM CDT (16:29 UTC)
Expired
Jul 4, 1987, 12:45 PM CDT
In force
76 min
Issued by
NWS Springfield, MO
Area
Whole counties

Counties Laclede County, MO, Texas County, MO, Wright County, MO

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Springfield, MO (KUMN), launched 12:00Z, 4.5 hours before the alert went out and 141 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, Springfield, MO at 12:00Z on 1987-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2326 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, Springfield, MO at 12:00Z on 1987-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
2326 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
694 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
93 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSGF 041629
SVRSGF
MOC091-215-105-229-041745-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1129 AM CDT SAT JUL 4 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1245 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTH CENTRAL MISSOURI...NORTHERN HOWELL...TEXAS...LACLEDE AND WRIGHT

AT 1130 AM CDT THE LINE OF THUNDERSTORMS MOVING THROUGH
SOUTHWEST MISSOURI CONINUTED TO MOVE TO THE EAST AT 40 MPH AND
WERE LOCATED FROM LEBANON OR ABOUT 45 MILES NORTHEAST OF
SPRINGFIELD TO NEAR WILLOW SPRINGS OR 70 MILES EAST OF
SPRINGFIELD.

REMEMBER A SEVERE THUNDERSTORM PRODUCES DAMAGING WINDS IN EXCESS
OF 60 MPH..LARGE HAIL..DEADLY LIGHTNING..AND HEAVY RAINS THAT CAN
QUICKLY FLOOD LOW AREAS.

THESE STORMS CAN AND OCCASIONALY DO PRODUCE A TORNADO WITH LITTLE
OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE
TO A PLACE OF SAFETY& IF ONE IS SPOTTED.

IF THREATNING  WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY AND RELAY YOUR SEVERE WEATHER REPORT TO THE NEAREST
LAW ENFORCEMENT AGENCY.

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 4, 10:21 AM CDT, 1 hour 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1020 AM CDT SAT JUL 4  1987

...SOME WIND DAMAGE STILL BEING REPORTED WITH A LINE OF THUNDERSTORMS
PASSING THRU SOUTHWEST MISSOURI.

AT 1020 THE HEAVIEST STORMS EXTEND FROM FAIR PLAY IN POLK COUNTY TO
WALNUT GROVE IN GREENE COUNTY TO EAST OF CASSVILLE IN BARRY COUNTY.
THESE STORMS HAVE CAUSED DAMAGE TO A RESIDENCE AND AROUND 10 AM
ANTENNAS WERE REPORTED BLOWN DOWN IN CASSVILLE MISSOpURI.  MOVEMENT OF
THE LINE CONTINUED TO THE EAST 30 MPH.  EASTERN JASPER COUNTY IS
PRESENTLY OUT OF DANGER.  WARNINGS CONTINUE AS ISSUED FOR OTHER
COUNTIES IN SOUTHWEST MISSOURI.

NINE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 9:36 AM CDTSevere Thunderstorm WarningSGFDade, Jasper, Lawrence54 min
Jul 4, 9:57 AM CDTSevere Thunderstorm WarningSGFBarry48 min
Jul 4, 9:57 AM CDTSevere Thunderstorm WarningSGFGreene, Polk48 min
Jul 4, 10:49 AM CDTSevere Thunderstorm WarningSGFChristian, Dallas, Douglas, Webster51 min
Jul 4, 10:49 AM CDTSevere Thunderstorm WarningSGFOzark, Taney51 min
Jul 4, 11:29 AM CDTSevere Thunderstorm WarningSGFHowell76 min
Jul 4, 12:59 PM CDTSevere Thunderstorm WarningSGFCarter, Oregon, Ripley, Shannon46 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1987Every severe thunderstorm warning in 1987

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.