Alert archive / Arkansas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 50, NWS Tulsa, OK

June 19, 1987Sebastian County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Jun 19, 1987, 4:43 PM CDT for Sebastian County, Arkansas. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Jun 19, 1987, 4:43 PM CDT (21:43 UTC)
Expired
Jun 19, 1987, 5:45 PM CDT
In force
62 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Sebastian County, AR

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, 9.7 hours before the alert went out and 194 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 1987-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 586 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 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 1987-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 square meters per square second.1939Sfc1 km3 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
586 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
758 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSM 192148
SVRFSM
ARC131-192245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT SMITH AR
443 PM CDT FRI JUN 19 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  545 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN WEST ARKANSAS
          ...SEBASTIAN
 
AT 448 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTH OF
FORT SMITH ARKANSAS MOVING SOUTHEAST AT 25 MILES PER HOUR.
 
 
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

Local storm report, Jun 19, 3:23 PM CDT, 1 hour 20 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
323 PM CDT FRI JUN 19 1987

 TIME/CST COUNTY      EVENT
 245 PM   MCINTOSH    C.D. REPORTS STRONG WINDS...ESTIMATED TO
                      NEAR 70 MPH AT CHECOTAH OKLAHOMA.
 255 PM   MAYES       HIGH WINDS CAUSED WIND DAMAGE IN AND
                      AROUND PRYOR OKLAHOMA.  TREES AND POWER
                      LINES DOWN.  ALSO A RADIO TOWER BLOWN
                      DOWN.  REPORT FROM C.D.
Local storm report, Jun 19, 3:24 PM CDT, 1 hour 19 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
324 PM CDT FRI JUN 19 1987

 TIME/CST COUNTY      EVENT
 245 PM   MCINTOSH    C.D. REPORTS STRONG WINDS...ESTIMATED TO
                      NEAR 70 MPH AT CHECOTAH OKLAHOMA.
 255 PM   MAYES       HIGH WINDS CAUSED WIND DAMAGE IN AND
                      AROUND PRYOR OKLAHOMA.  TREES AND POWER
                      LINES DOWN.  ALSO A RADIO TOWER BLOWN
                      DOWN.  REPORT FROM C.D.
Local storm report, Jun 19, 3:53 PM CDT, 50 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
352 PM CDT FRI JUN 19 1987

 TIME/CST COUNTY      EVENT
 300 PM   MAYES       PUBLIC REPORT OF HIGH WINDS AND MINOR
                      DAMAGE TO TREES AND8 LINES IN CHOUTEAU
                      OKLAHOMA.
Local storm report, Jun 19, 4:04 PM CDT, 39 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
403 PM CDT FRI JUN 19 1987

 TIME/CST COUNTY      EVENT
 350 PM   OTTAWA      C.D. REPORTS TREES AND POWER LINE DOWN
                      IN MIAMI AS HIGH WIINDS HIT THE AREA.
                      SMALL HAIL REPORTED AT FAIRLAND.
Local storm report, Jun 19, 4:05 PM CDT, 38 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
405 PM CDT FRI JUN 19 1987

 TIME/CST COUNTY      EVENT
 350 PM   OTTAWA      C.D. REPORTS TREES AND POWER LINE DOWN
                      IN MIAMI AS HIGH WJINDS HIT THE AREA.
                      SMALL HAIL REPORTED AT FAIRLAND.
Local storm report, Jun 19, 4:25 PM CDT, 18 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
420 PM CDT FRI JUN 19 1987

 TIME/CST COUNTY      EVENT
 320 PM   CHEROKEE    C.D. REPORTS 3 GOOD SIZE TREES DOWN BLOCKING
                      ROAD NEAR TAjHLEQUAH.  HIGH WINDS.
 342 PM   DELAWARE    C.D. REPORTS AND POWER LINES DOWN IN GROVE
                      FROM HIGH WINDS ESTIMATED AT 60 TO 70 MPH.

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; the sounding from the Mesonet's radiosonde archive.