Alert archive / Arkansas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 80, NWS Tulsa, OK

August 19, 1987Madison County, Washington County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 19, 1987, 10:34 PM CDT for Madison County, Washington County, Arkansas. It was in force for 56 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
Aug 19, 1987, 10:34 PM CDT (03:34 UTC)
Expired
Aug 19, 1987, 11:30 PM CDT
In force
56 min
Issued by
NWS Tulsa, OK
Area
Whole counties

Counties Madison County, AR, Washington County, AR

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
Aug 19, 11:15 PM CDTThunderstorm Wind 0Washington, AR

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 00:00Z, 3.6 hours before the alert went out and 102 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 00:00Z on 1987-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 255 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 00:00Z on 1987-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.193958Sfc1 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
255 J/kg
Mixed-layer CIN
-176 J/kg
Mixed-layer LCL
2100 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSM 200334
SVRFSM
ARC087-143-200430-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
1034 PM CDT WED AUG 19 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 1130 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN WEST ARKANSAS
          ...MADISON...WASHINGTON
 
AT 1035 A LINE OF SEVERE THUNDERSTORSMS WERE MOVING INTO WASHINGTON
AND MADISON COUNTIES OF ARKANSAS MOVING SOUTHEAST AT 40 MPH.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND 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 ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

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 19, 9:35 PM CDT, 59 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA, OK
934 PM CDT WED AUG 19 1987

  ...THUNDERSTORMS ARE MOVING OUT OF KANSAS INTO NORTHEASTERN OKLAHOMA...

AT 9 30 PM THE TULSA WEATHER RADAR INDICATED INTENSE THUNDERSTORMS IN
EXTREME SOUTHEASTERN KANSAS AND NORTHEASTERN OKLAHOMA. THE STRONGEST
OF THESE THUNDERSTORMS WAS JUST NORTH AND EAST OF MIAMI OKLAHOMA AND
WAS MOVING INTO SOUTHWESTERN MISSOURI.

THESE THUNDERSTORMS WILL LIKELY PRODUCE VERY HEAVY RAIN...HAIL...AND
WIND GUSTS TO 50 MPH. BOTH HAIL AND VERY STRONG WINDS WERE REPORTED
WITH THESE STORMS AS THEY MOVED ACROSS CHANUTE KANSAS WITHIN THE PAST
HOUR.

PERSONS IN MIAMI AND VINITA SHOULD REMAIN ALERT TO THE POSSIBLITY OF
THESE STRONG THUNDERSTORMS AND SHOULD TAKE COVER IF THREATENING WEATHER
APPROACHES.
Local storm report, Aug 19, 10:00 PM CDT, 34 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
958 PM CDT WED AUG 19 1987

 TIME/CDT COUNTY      EVENT  (CD=CIVIL DEFENSE  OHP=OK HIGHWAY PAT'L)
 948  PM  OTTAWA      CD DIRECTOR REPORTED WINDS OF 65 MPH W9ITH
                      MANY WINDOWS BLOWN OUT OF DOWNTOWN AREA.
                      TREES DOWN AND POWER LINE DAMAGE ALSO REPORTED.
Local storm report, Aug 19, 10:08 PM CDT, 26 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
1007 PM CDT WED AUG 19 1987

 TIME/CDT COUNTY      EVENT  (CD=CIVIL DEFENSE  OHP=OK HIGHWAY PAT'L)
 959  PM  OTTAWA      SPOTTER IN PITCHER REPORTS WINDS TO 6G0 MPH.

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 19, 10:19 PM CDTSevere Thunderstorm WarningTSABenton56 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 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.