Alert archive / Missouri / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 49, NWS Springfield, MO

July 4, 1987Greene County, Polk County, Missouri

NWS Springfield, MO issued this severe thunderstorm warning at Jul 4, 1987, 9:57 AM CDT for Greene County, Polk County, Missouri. It was in force for 48 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 4, 1987, 9:57 AM CDT (14:57 UTC)
Expired
Jul 4, 1987, 10:45 AM CDT
In force
48 min
Issued by
NWS Springfield, MO
Area
Whole counties

Counties Greene County, MO, Polk County, MO

The radar

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

What was reported inside it

TimeReportWhereRemark
Jul 4, 10:29 AM CDTHail 0.75Greene, MO

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Springfield, MO (KUMN), launched 12:00Z, 3.0 hours before the alert went out and 71 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 041457
SVRSGF
MOC009-167-077-041545-

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

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 1045 AM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTHWEST MISSOURI...BARRY...POLK AND GREENE

AT 0955 AM CDT A LINE OF DANGEROUS THUNDERSTORMS EXTENDED FROM
NEAR GREENFIELD OR 30 MILES NORTHWEST OF SPRINGFIELD TO THE
STATE LINE NEAR SELIGMAN OR 50 MILES SOUTHEAST OF JOPLIN.  SOME
STORMS WITHIN THIS LINE WERE CAUSING WIND DAMAGE.  MOVEMENT OF
THE LINE IS TOWARD THE EAST AT 30 MPH.

BOATERS ON LAKES SHOULD MOVE TO SHELTER IMMEDIATELY.

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.

PEOPLE OUTDOORS..IN RECREATION AREAS OR AMUSEMENT PARKS SHOULD
SEEK SHELTER IMMEDIATELY.

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.

CAMPERS ALONG CREEKS AND STREAMS SHOULD MOVE TO HIGHER GROUND.B

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

 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, 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 WarningSGFLaclede, Texas, Wright76 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.